How difficult is the B16 swap in a 4th gen (90) DX hatch compared to a 5th gen Civic? Does it bolt in or does it require fabricating(or buying)/locating/welding mounts? I'm trying to figure out what year I would like, and if the 4th gen isn't that much more difficult to swap then maybe I'll choose that route.

Any reasons for picking a 4th gen over a 5th gen, or vice-versa? All opinions welcome.

TIA,
Andrew