I have a 71 cutlass supreme (convertible) and want to put a overdrive transmission in the car. I have a olds 455 and th400 trans in the car now. I know the th350 driveshaft will work with a th200r4 but I need to know the lenght of the driveshaft from u-joint to u-joint. Does anyone know the lenght of th350 driveshaft?