Corey pulled the stock 4.8 and put a 6.0 in with rec port heads and truck intake. It has a 210/218 on a 114 Comp Cam, headers, true dual exhaust, and Flowmaster 40 series mufflers.
Corey’s 2000 Chevrolet RCSB 6.0 with LS3 top swap
Aaron’s Sierra 
Aaron’s RCSB Sierra started life as a v6 truck. He swapped an LS V8 with 4l80 in its place. I provided him a tune and segment swap to match his modifications. Truck is running/driving now and Arron is enjoying his work.
