Ive used DYNAMIC Racing Transmission's Mighty Mite M2 C4 transmission for about a year now. Never had one hiccup with the transmission & shifts perfect every time. I beat the 300zx Street Chassis 4 seater record with a 9.606 @ 142mph (1.37 60ft) being 3300lbs with driver. Ive upgraded a lot since that pass and also dropped some weight with a goal to get into the 8s soon. Hoping to be the first street chassis 300zx in the 8s and doing it with a DYNAMIC Racing Transmission......Dean Moslow Jr.