You would need the entire set-up...computer, wiring harness, fuel pump, etc....
Is it worth the effort? Yeah, it could be, depending on what the guy has. Is it an L98 TPI set-up, or is it an LT1 set-up? The '92 should have the LT1, which uses shorter intake runners, and sequential injection, where the L98 has the long runners, and batch-fire injectors. The L98 set-up prolly would actually kill some of the higher rpm power, but give you more low-end torque...the LT1 system would prolly be a better bet, overall.
Another member here (wraith) has installed an complete LT1 engine in his car. Took him a while to get it all going, but last I heard, it was running.
I think you're prolly good with what ya got now, if it's making 460hp, but that's just me.
"If it ain't broke..."
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Joel Adams
C3VR Lifetime Member #56
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"