in 92, the corvette had either a LT-1 or an LT-4 motor. For the 92/92 years, the system was a speed density controller and batch fire injectors. Your initial concern is IF the intake manifold will bolt to your existing heads. The 92 motor had aluminum heads. The manifold bolt hole geometry may be different for the center two bolts.

You need the intake, ALL of the wiring, the ECU, ALL of the sensors, etc. There are people that can hack the ECU to bypass the key anti-theft interlock. Hacking the box will cost $400 or so. For the smaller engine, you may need smaller injectors and/or changes to the ECU code.....lots of folks do this service. The fuel system is somewhere about 43 psi as I remember so a mechanical pump isnt going to cut it. In all,, you should be able to pull this off for $2500 or maybe a bit more if you already have the engine and injection......by the way, you need a factory manual set for the corvette that has
the detailed wiring diagrams. Throw in a crimp tool too and a source of connector pins.