Thanks Robert. I already have a shaft in there, but I think its too short. I will measure it today and see where we are. Is 3/4 to 7/8 enough end play to compensate for suspension movement? The car is totally stock underneath except for the different engine. I am positive after having the shaft out recently that there is way more than that much end play. When I bought the car years ago, the previous owner lost the original shaft, so I found this one on E-bay. It works, but I don`t think it engages the tailshaft quite enough.