Ok so did some looking around and I'm understanding what your talking about now.. Outta curiosity what turbo/AR was you looking at? I just seen the 6766 with the T3 flange .82 AR and 3" v-band... You thinkin that would be to small still? I guess now my concern is the z7 crossover with T3 flange..will that kill it too or is the main concern just getting the gasses out?