My experience with turboing a 6.2 is somewhat limited as I have never attempted it. Member Stonepicker gave me a ride in his M1028A2 dually some years ago at the GAMVR and that truck could spin tires on pavement. When we got on the dirt road, it almost slithered around as bad as my Trans Am when he stomped on the Go Pedal. I do recall that he had a Banks Sidewinder kit, had relocated 2 Optima redtop batteries into a single battery tray and likely quite a few other mods that I forgot about over the years. I think he had a 6.5 engine it it but I am sure he will correct me if he sees this. That truck could roll and had real snappy throttle response. If mine was not so original, I would consider doing something similar.