well I will say I got the LS1 RX7 in the 12's here is the 1st pass to date in the car on street tires.

http://www.youtube.com/watch?v=0iRbSa9G3y8

I have sense then gone 12.003 @ 121 with the car on some DR's still can't get hooked up. So I'm changing to a 26X11.50X16 MT slick. I will be back for the low 11's club then.

 

You may need to put some ballast in the trunk, that car is just too light for it's own good

 

Do the Cobra diff swap, this will help you alot with traction. My car runs low 1.7 60' on street tires.

1993 RX7

 

Is the ls1 in it stock? That is a really good mph if so!!

If you do a lot of drag racing you may want to look into a 9" solid rear......Don't know much about the rx7's...

 

Its a cam bolt on car for the most part made 405 RWHP. Ya mike I want the cobra rear its in the plans for the car.

no I'm not going to drag it that much but I would like 10's out of the car I will see what is does with the full slicks, and the cobra rear.