^disregard.

Use the Y8 Head and intake manifold. The Y8 intake and exhaust manifolds flow the best of the OEM manifolds. The head ports match the Intake manifold the best. research cam selection for the Y8 head, they are not as common as other d-series cams. Check out the Bisimoto website and see what they offer. The quench pads and smaller combustion chambers offer better burn characteristics than a larger combustion chamber. You do not need to have a piston with as large of a dome which helps prevent detonation. I would reconsider using the Y8 block. For some reason the Y8 tends to spin rod bearings more easily than other d-series engines. I'm not sure why, something about the oil pump. Whichever block you choose, you will need to at least upgrade the rod bolts or replace the rods. as long as you do not use too much nitrous, the rods bolts will suffice.

What I would do:

D16A6 or D16Z6 block, crank and rods NEW OIL PUMP
ARP rod bolts
D15B7 pistons
D16Y8 head, head gasket and intake manifold w/ OBD2 B-series throttle body (must have IAC on throttle body)
Stock OBD1 injectors
Custom camshaft regrind from Bisimoto
Valve springs that will support 8000 rpm
Inexpensive Tri-Y header

This will give you just over 12:1 compression and a fun little engine.