Here we have a 6.5L OPTIMIZER Diesel engine with a GM 4L80E Transmission & NP242 Transfer case. with only 8017 miles it is the New GEP Optimizer 6500 Block unlike the old 6.5 blocks with the heads ...

All of that incredible power barrels straight through a 4L80E automatic transmission, proven to be one of the best transmissions in the GM engineering catalog. The exhaust is entirely custom-built ...