Sunkenkarma

Ok, So I picked up a 97 GSR shell (Rolling, has all suspension, wiring, etc), Just curious on what i need for the actual swap. Motor, trans, mounts, ecu, shift linkage, axles and halfshaft? What motors will hook right up to the current harness?Year wise? I wanted to keep it original and put a C1 back in it, but they are out of my price range. Was thinking B18B or B20Z. First time doing a swap, so any help is greatly appreciated.