hey everyone, just traded my friend for his 1994 honda civic with b18 that has 200,000 miles on it and he has a 63trim turbo on it only pushing around 8pounds. i know i deffinitly need to upgrade to some nice turbo pistons and rings and id be fine but if i did a swap, what motor would you suggest to be turbo'd and would fit.

also the motor seems to jump between 500rpms and 1000rpms in a consistant pattern, could this be because he has the stock fuel injectors and pump? i am also thinking maybe a vacum issue?
oh and i forgot to add that the unsteady idling goes away when you driving, it sounds and revs fine and steadily.