I have recently picked up a 91 240sx hatch it has a sr20det swap with a megan manifold, greddy elbows, greddy piping, big nismo down pipe, huge greddy fmic, hks ssbov, hks full 3" exhaust, rc555 injectors, walbro 255 fuel pump, apexi avc-r, greddy full auto turbo timer, some other apexi programer, and he said the turbo is a garret hybrid t28 it is stamped a/r 60 on the cold side and .64 on the hot side he said the turbo had been ported or bored or somthing. My question is can my motor put close to 400 hp to the rear wheels with this set up or should I upgrade the turbo. The turbo on it is new and the car has a break in tune on it know and put 318 to the rear wheels know the tune was done at lethal injection. Any info would be greatly app