Hi guys, I just purchased a beat-up 1967 Riviera. There's a severe shudder coming from the drivetrain. I have understood the ST-400 is a pretty stout unit, so I'm suspecting the 2-piece driveshaft. Any experience with that?
I think you could be on the right track. We have a '66 106,000 mile car and the previous owner installed an aftermarket shaft, so I assume they were having similar problem.
