Injen manufactures with 60mm piping. I will PM you about your second question.What size piping does the 2.0 one use? 3" into duel 2 1/2" pipes? Can you get it without a resinator on it?
Are you sure it isn't a 78mm stepping down to twin 60mm tail pipes? Cause from what I have researched it takes one single 3" (76.5mm) pipe to support 400 hp and if this kit only uses a 60mm single pipe before steping down to two pipes it would be a choke point in my exhaust when I reach that goal.Injen manufactures with 60mm piping. I will PM you about your second question.