There are a few problems with this...
- The T43 requires CAN communications and the LS1 PCM has no provision for CAN.
- No one makes a torque converter to mate the 6L80E or 6L90E to an early SBC or LT1.
- A Gen IV controller (58x) will require a 4x cam signal. The only solution is a 4x reluctor for a Vortec distributor.
http://www.eficonnection.com/eficonn...uctor_300w.jpg
Unfortunately the 4x cam signal solution in the front of the LT1 did not work, so LT1 owners will have to use the Vortec distributor. TPIS makes a MiniRam for the LT1 and it has a distributor hole.

