Ok so I bought all these:
http://www.frsport.com/Tanabe-TUB063...7_p_12945.html
http://www.gtspec.com/product/gtspec...ace-350zg35g37
http://www.gtspec.com/product/gtspec...-brace-350zg35
http://www.gtspec.com/product/gtspec...-brace-350zg35
http://www.gtspec.com/product/gtspec...-brace-350zg35

The people I bought them from said they were all a direct bolt on with stock bolts. I jacked up the car, it looks like the lower tie and lateral braces fit on stock bolts. But for the life of me I cannot figure out the tanabe and 4 point braces. I somewhat figured out where they go, but there are no bolts there so it can't go there. I tried researched online and I can't find any guides on how to install these things, mainly because everyone says it's common sense. Maybe I'm just blind lol

Do these require aftermarket bolts? If so, anyone know how I can go by getting one?
If they do use stock bolts, where are they?

Any input is appreciated, I want to get these installed already

 

Sorry I can't answer any of your questions but I am curious what the point of these are?
Are you pushing your car so hard that you feel it flexing? I thought Nissan made a pretty stiff chassis with this car.
Also, what is the total weight being added to the car?

 

Ditto

 

Total weight, maybe 5-10 lbs? Just stiffens the car to corner better, from what I read up on them. When I install them I'll test to see if it's true lol
Mind if I pm you a few questions about tracking? I want to go to willow springs sunday, but never tracked before and as your user title says, you're a "Track Junky" lol

 

Geez!Wonder'in whats your objective with all these braces except to spend
a lot of bucks?Don't know about the Tanabe,but the GTSPEC(MID BRACE)is exact
bolt on.
You must have big track plans?

 

Beginners are welcome on Sunday so feel free to come out

 

It may be all in my head, quite a bit is, but I installed GT Specs 6piece set and I could tell a difference in how the car cornered…

and 10lbs of extra structural aluminum was worth it. The under-carriage brace does a really good job of protecting the underside of the car from bumps & scraps too...


Not trying to be a dick, nor am I looking to start a battle, but IIRC, I spent ~$700 on the set…and if $700 is alot of money then consider keeping your Z stock…it gets a lot worse from there!!

 

I went for upgraded bushings instead. They're really worth it. I might do GT Spec fender brace and front lower tie bar to complement the mods.

My buddy gave me the rear lower lateral brace and it did make the car's rear-end feel tighter. I was surprised TBH

So what's the update on those bolts, OP? Can't you get them from some store that specializes in bolts?

 

$700 is a lot to spend on useless stuff. There are a lot of thing your can buy for $700 that will actually improve the car.



The front fender braces are the only one i would consider buying.

 

I do, but in the future. My plan is to do full suspension work, even unnecessary stuff as people claim. Then once my engine blows (Hopefully in a few years...) I'm going to do a ls3 swap, wipe the interior clean, and make it my track car.
Already bought my entrance
I only installed the rear lower tie arm brace and the rear lateral arm brace, the back end already feels stiffer
Also, I bought everything listed for $400, shop smart
Yeah when I installed the lateral brace and lower tie arm brace, I was thinking wtf can this possibly do.. Then I took a corner and the back end just felt amazing, not a night and day difference, but you can definitely feel it
Also, I called gt spec directly and apparently for 2003's they used a rivet system which is now upgraded to a bracket system. So all in all, if I want this installed I'm going to have to spend $30 to get the bracket shipped and I won't get it until late next week Debating on selling it because I don't want to go through the hassle.. If it feels stiff enough with everything but this on I'm gonna sell it, if I want more then I have no option but to buy the brackets lol

More details:
For 2003's the place of install only has 3 holes. None of which has any thread to bolt into. So even if I decide to buy bolts, it won't bolt onto anything. So they sell this thing where you slip it into the second hole and it snaps into the first hole as a direct fitment and it acts as a nut. You then get the bolt provided (regular bolt) and bolt up the ladder brace.

I've heard good things about the fender braces, however 6 hours install time is outrageous lol + as I mentioned, I only spent $400 on all 5 pieces. Combined value new is around $900 so I couldn't pass up on an opportunity like that

 

Don't discount the chassis bracing so easily. I've known quite a few serious racers that use underbraces on quite a few cars, including Zs, and all had very positive experiences. The Z chassis is stiff, but not as stiff as a stitch-welded or braced chassis.

 

 

^because race-chick

btw. thanks for the info, Bruno. Hope you get that thing sorted out.

 

^No problem
Also, I heard that the front lower tie arm isn't worth it at all. You can't feel a difference with it on or off. So I'm not even installing mine, I'm going to be selling it and the fender liners make a huge difference, only downside is the 6 hour install time lol