Questions about B series motors
 

I have a 94 integra. It has a 252000 miles non vtec motor. I would like to swap another b series into it. Preferably an upgraded one. I've read over all the different b series motors. My question is, which one. What's the best value or power, cost, and ease to boost? And then do I get the accompanying transmission or keep my automatic? Thanks.

no real way to answer this question

for simplicity a b18c1 is drop in with minimal wiring changes

if you plan to do anything performance wise with it please switch to a 5 speed transmission (again gsr is typically the best for FI)

Swap to 5 speed. Otherwise, you are best off with another stock engine (b18), or going for a B20 (basically the same motor as the B18, just bored out to 2.0L - slightly more torque from the B20)