A friend of a friend has an 08 subaru wrx with just a intake and exhust, I belive the 08's have 260 sumthing hp and 244 ft. lbs. trq. He wants to go from a dig and i said sure i already know the out come from that is, soo after we go from a dig it's my choice on the next go so whats the best roll i should go for 40mph ? Also a friend of a friend has an 02 mustang gt automatice with a superchip and mufflers lol he thinks hes badass. So whats is the l67 best at for a roll ? 30, 40, 50 ??