forget the B16. im not knocking the B16 cuz its a good engine with good potential, but if i were paying the funds to get an engine swap, i wouldnt go B16. ideally, i would get a B18C if i could afford it. but if money is somewhat tight for you, get a B20Z or JDM B20B. sure it has no vtec, but stock you will still hang with stock GSR's... and thats with the stock LS tranny. put on a GSR tranny on that engine and you'll be even quicker. plus you dont have to deal with wiring up the VTEC.

but to answer your question, if you do get the B16, itll drop right in.