The drive shaft is half open and half closed, something my wife's grandfather must have come up with in his state of the art backyard dirt floor workshop so he could put a different rearend. Seems to work and doesn't vibrate. I've since swapped the rearend with a rearend with 3.90 gears. It helped a lot with the cruising but still just not enough. I guess I'll just go the auto route then since I already have a turbo 350. Thanks for the help guys!
