Bro this question gets aksed all the time, I gotsa corona 2 and afta aksng around...
You get some rear susp assemblies from celica with discs (cos drums won't help much when it comes time to certify the beast)
3sgte for max power but in a fwd car you may well be happy with a later model 3sge the latest generation 3sge's put out more(?) than gen 1 3sgte's. Apparently you keep your corona box (sux for me as this is my second and just after warranty my synchros in 2nd and third started going).
Costs 3sgte from bout $1500 to $2500 for second hand one (not sure if that with loom and stuff).
My suggestion is to get the suspension sorted first, you do not wanna die in your mega powerful boat
, for a 3sgte you should get a complete overhaul done, new shocks, chicken, rotor upgrades maybe even calipers etc. remember you gonna be almost tripling the power if you doing it properly.
Well I still a while off on mine but suggestion is to buy a $500 car and take your project car off the road...... don't take any shortcuts... and watch out for chickens.