dude have you ever heard of club4ag???
you can get coilovers all day for like $200.00
and as far as going fast forget about it.
my 86 is far from stock and its still slow as hell. its only good for grip or drift. even if you do swap the motor there will always be somebody faster, so just exploit the dirft potential in the car. i spent three years on okinawa and saw only a hand full of turbo'd 86's that held together. the 4ag just dosent like boost. by the way this is not a hate mail... i love the ae86