[lxndr]

The essential parts needed to swap in an '86-'87 Acura Integra D16A1 are:

D16A1 motor, tranny, tranny mount, shift linkage, CV shafts, steering knuckles, throttle cable.

Additional parts are:
ECU, air intake tube (if not using a CAI), donor engine wiring harness (since you'll need to switch some pins around), exhaust manifold (if not using a header) stiffer torsion bars, and a brake swap.

If you're on a budget, the D16A1 will run using the CRX SI ECU until you can get the integra ECU, None of the parts from your stock EW/D15 will fit on the D16A1 motor, so you will need a complete donor motor.

An '88-'89 D16A1 will require the same parts, but you will also need a CRX HF VSS, and a complete '88-'89 Integra engine wiring harness including the ELD, and an '88-'89 ECU.