Talk to Tnord on Honda-tech.com, he roadraces a 240SX. I recently "started" building one up, and he was very, very helpful. Also check out the track forum on www.freshalloy.net, or the 240 forums for technical questions.

As far as a comparison between FWD and RWD in this case, I'm comparing my 14-year old 240 with KYB AGX shocks and Tein S-tech springs to my 4-year old Type R with Zeal B6s, so I was really disappointed by the 240. However, that's not saying they're incapable by any means, I'm just too spoiled by the stiffness in the R. And while it probably won't apply to your situation, the hopped up SR20DET is waaaaaay more powerful than my silly little B18C.