sorry i read over that post. The ws6 has a slp catback, slp lid, and 3.90 gears.

 

Curious what was your 60ft and trap? Compare your TA's trap to the times I posted above and make a decision

Avg St trap speed is 112-113mph, some go as high as 116-118mph but thats not the norm.

 

The Trans Am isnt mine,I have a Cobra that runs a 13.2. The T/A is just another car i was looking at purchasing. Not sure what his 60' or trap were.

 

you are NOT going to get that car into the 12.50s either

you will run 13s all day on street tires.

What trap does your cobra run 13.2s at? You dhoul just supercharge your cobra and gear it.
or you can make a stock bottom end 11 second N/A cobra these days without much trouble.
What year is your cobra?

go with the 350z as long as the bugs are all worked out. I woudl always be weary of buying a car that modded unless the story and background is backed up and all is on the up and up.