ae86 is a good cahssis if you plan on redoing it . remeber htese things are getting up on 20yrs old now and alot of them arent in tip top shape
plan on replacing every bushing in a 10mile radius , new brakes , prolly a lsd , if your model even has 1 , plus aftermarket suspension , and tune up parts .
your going ot be investing a good chunk of change when you can get a s13 really chepa and just do a diff , suspension , mods to a s13 for alot cheaper .
i love the ae86 chassis though so do it if you can