the rep has been wrong before (he told me no Borla catback for 2+2)... could someone measure the pipes and settle this? The problem is Borla and resellers (Stillen, etc) do not list the Borla pipe diameter, they just give the Borla claim that it is "optimized" for exhaust flow. If it is 2.25", then this exhaust should still be good to 400-500bhp.