I think the best S RX7s are a mishmash of S4 and S5.

I think most folks start with an S4, and put the five lugs and brakes on, the 5th gear from the GTU, the aluminum hood and the 5.12 rear end (which I understand is hard to find now).

PM Steve Eckerich or Racing Ralph about this, or the Flatout guys up in the Northeast. THey know the cars inside and out (lots of others do as well, and I'm sure they will chime in).

Quote Originally Posted by jcocke View Post
Hi everyone,

The last two seasons I raced in Spec Miata with the NCRSCCA. My good friend runs an ITS 280Z, and now I'm thinking of building an ITS RX7. I want to build the car, b/c I have more time than money right now, and we're pretty capable with what we can do.

I don't know much about RX7s yet. I'm thinking the best donor would be a S5, 5 lug wheels with the big brakes, and preferably no sunroof (sounds like I need a GTUs). I've heard most guys run a 4.88 or 5.12 rear gear, but with which LSD...the Mazdacomp unit?

I will have a ton more questions in the months to come, but right now I'm focussed on finding the best of the cheap donor cars out there.

Any help is appreciated. I'm pretty excited about building the new car and racing with y'all!

-Jason