So while I was at a 4x4 shop down in Fort Collins, CO. I asked them about a twin turbo 5.3L and he is gonna do some research on it for me and is gonna let me know what he finds. So I might be getting a 5.3TT in the future. Either that or dropping in a 502 Ram Jet or a LSX block and all the good stuf to go with it. Does anyone know of a twin turbo 5.3L?