Hi.
1 - Check your class rules. I'd guess a 3S in an AE86 would end up in the "anything goes" class and be wildly uncompetitive.
2 - A bloke who races an RA45 Celica (posts here and on Toymods) has got close to 200rwkw out of an NA 3S. From what I have heard it has cost a huge amount in parts and also R&D, not to mention the hours involved. So basically if you are asking prices on a forum I don't see those power figures happening.
3 - 190ft lbs is around 260Nm. No you will never get there. NA petrol engines make 100Nm per litre, +/- a little bit. 130Nm per litre is also not happening.
4 - What is your rally experience?
Have a good read around, check rules then plan and research what you want to do.