I currently have a supercharged ZC 1988 CRX si that makes around 200whp. Looking to upgrade to dual boost settings for 3-400whp and 5-600whp. I was thinking of swapping to a turbo K20. What am I looking at needing to reach my goal? Would a stock bottom end be ok? Also whos Kswap do you guys like?

Current Build Specs:
D16A6 SOHC
Eagle rods
ARP Bolts
Port/Polish and oversize valves
Eagle Cranksaft
68mm throttle body
Jackson Supercharger at 10psi
Billet Sump
Close ratio limited 5 speed
Tokico adjustable suspension
Willwood front and rear Disc

Ill probably be pulling the motor and trans out, but have no idea what to do with them. New project or is the ZC or supercharger still sought after? Id like to make my new setup as budget friendly as possible.

 

Could do a ls4 with a f40 trans. What about a j30/35