what's the motor in there now? 3K or 2T? and what's your intention with the car, drag or track or just daily driving with occassional spirited driving?
here's my suggestion...
- if it's 2T powered, build up your original motor and make it a 2TG (twin cam like with the Levin/Sprinter) by combining the oem block with an RG head.
- 3TC would be another choice. 1.8L version of the 2T. you can still modified this to run it as a 2L.
- 3T-GTE... turbocharged version of the T series engines with dual spark plug.
- 16V / 20V 4A-GE... there's enough info about this on the net so i'm sure you know already what this is.
- but if you wanna go crazy.... try installing a 3S-GE or 3S-GTE!