Sounds like a great idea! That will net you about 20+ MPG fun daily driver. You will need a harness to start. Then you need to decide if you want to cut the frame to add the factory AC compressor or some have added a high mount unit. Some custom AC hoses to complete your setup. T56 should hold well. I think the swap is easier with the fuel injection. You will also need a fuel pump, pressure regulator ect to feed the LS1. Nelson Performance has a simple wiring kit and tuning that will work great with you LS1 setup! Plus you can tow your GTO to the race track without problem.
2006 Superior Blue Trailblazer SS AWD, Stock as a rock
Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).
Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning
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