have a wider face. Fin wise. Im glad i got the Ash. My buddy bought the Z1 2.5" piping and B.A intercooler and i bought the Ash 2.5" piping & v3 intercoolers (also 2.5" planar pipes) but when we install them i will def put up a post on how each one fit compared to the other. And i wish he would do bigger turbos like me so we can see hp diff. I got the ash gt2860 and he is staying stock so no real comparing their.