I just done this swap and its pretty simple, F23a1 obd2 IN 92 prelude obd1, tfor the hard part everything bolts up perfectly tranny mount, engine mount, back and front mounts - and you have to use like 92-93 accord distributor with external coil, and f22 or h23 intake manifold you have to modify the gasket and block a coolant hole and cut off a pice from that manifold you will see if you do it, then just use h23 engine wiring and ecu.