Ive been going thru a lot of threads to see as much as info as possible and the only thing I have noticed is that when changing both of them I should do the Ream Main Seal. I just wanted to make sure I didnt miss anything else. Also the clutch/flywheel I got from JWT came with new SS clutch line however I just had a line installed about 4 months ago with motul fluid, should I install the new one? The line in the car right now is from Z Speed Performance:
http://www.zspeedperformance.com/ZSp...P2006IH-DE.htm

I got this one because it comes with a heat shield.

Thanks in advance!

 

I've asked two reputable Z shops about the Rear Main Seal on the VQ35DE and whether or not it should be replaced when doing a clutch/FW replacement. Both shops said if it's NOT already leaking/weeping, don't touch it! Unlike the Z32, the rear main seal on the VQ is much harder to replace and requires you to drop the upper oil pan in order to replace it properly. I haven't seen or heard about the rear main seal being a common problem on VQs. I'm sure many Zs and Gs have achieved 200k+ mi without ever having it leak.

This is one of those rare instances where replacing the seal can actually create a problem where none existed before. One small mistake during the re-installation process of the upper and lower oil pan can cause leaking issues.

Regarding the SS clutch line. It can't hurt. The OEM line is just fine IMO.
-Icer

 

^+1 if it aint broke dont fix it.

The heat shield is not 100% necessary, but its a pretty easy job and you could even just add some insulation to the SS line you already have on there.

 

Agreed on the rear main seal, maybe the OP should post where he's getting that kind of advice? No reason to change that component unless it's badly leaking.

If the new brake master line you just installed is working properly, there's no reason to swap it out either. Just keep the other as a spare or sell it outright.