My Jan Built S Code Mach 1 has the axle tag missing. My Marti report says my axle code is 9 = 3.25 standard axle ratio. The car is equiped with a four speed manual.
Should my car have the 28 spline axle (which i think is correct) or a 31 spline. For my knowledge, what was the deciding factor on whether cars received a 28 or 31 spline cars?
Thanks