Originally Posted by fsufan814

as long as you used the y7/y8 mounts that are on your motor it is a drop in bolt up, you will need to do a OBD-1 conversion though

the z6 is considered "better" for a few reasons, the head tends to flow better stock.
The major difference is the y7/y8s have a nitorious record for spinning rod bearings bc of some oiling issues. some have had good success but the majority hasnt, a fellow staff member on my site is now on his 4th y8 motor in his civic and they all have been N/A motors with only minor bolt ons

i would go z6 for reliability, a good base to start with, and essentially the same motor as the y8, same bore/stroke, just minus the oil problems and a head that tends to flow better