RPI sells them, we are still putting the final touches on the ver. 3 (For the M3). They have been building them on my car and I can tell you that my car pulls VERY hard. Stay tuned..
Current: 15 991 GT3 , 15 i3, 15 i8 | Past: 15 YMB F80 M3, 13 E92 M3 DCT, 08 E92 M3 6MT, 07 E60 M5, 02 E46 M3
*Upcoming Track Days: Jan 23/24 @ Buttonwillow Raceway + Jan 31 @ Willow Springs Raceway
Instagram: #SpeedDistrict @SpeedDistrict