it is a reworked d5 that stalls @3000 its big and heavy,weighs 28lbs dry.the i`m putting in weighs only 12lbs dry.i got it from a good friend and it work great in his car,revs real quick.my car ran 12 teens all day long and i never even wired it up to lock .rode in friends car and that convertor left like a punch in the back!!!should be no more turbo lag!!