I bought a single peice steel driveshaft from powertrain industries, after much debate if I should get an aluminum one. I talked to a guy on the phone from powertrain for awhile and he told me from what they have noticed there is no advantage of an AL one over a steel. (4 lbs lighter) He said they did work out the kinks of vibrations at higher speeds of the AL ones from what he knew. But I decided to go with the steel. I did notice a smoother/ slightly quicker rev up. Then on the way back from the shop an old celica pulls up to me and revs..... I just shook my head and blew him away.
Follow Ups
Just got my new Driveshaft :-) - D.E.S.A.T.S.19:39:27 05/23/03