What needs to be adapted to LT1:
Ignition (Optispark)
TPS
IAC
TCC

 

IAC Idle Air Control
Optispark Adapter

IAC:
Splice old connector or purchase new connector: 4 Pin GM Metripak kit from JEGS PM 182-1030009 for 1996 to 1997.

TPS (Throttle Position Sensor)

Original Wiring.
Tansmission F-Body, 1986 700R4
aaaaaaaaaaaaiii