First thing what you have to start with?
1. Get a good shock/spring or coilover set up (fairly easy to make the front)http://forums.club4ag.com/zerothread?id=42029
I have a set of front adjustable agx if yuh want check meh!
2. Next look into a set of new bushing, change every damn suspension bushing yuh have
3. Get a AE86 rear end and swap it (prol might have to re-shim the dif or get an aftermarket lsd)
4. Try strenghtening the chassis, use of aftermarket strut bars and prol some spot welding. I've heard these chassis tend to bend on high speed cornering etc.http://www.ultraracing.com.my/Catalog.a ... E86&page=1