The turbo it comes with is a 70mm on the cold side and the ar.70 on cold side. The hot side is a ar .63. This turbo will make 10psi inside the intake at 1500 rpm’s and makes pulling trailers feel like you’re in a 2500 pickup. It did do some funky shifting at first but I just had to play with hp tuners. Mine has the 6speed transmission btw. The wastegate being on the crossover pipe was causing major boost creep so I got rid of it and welded it to the turbo housing.