Nope. This is a GSA drive shaft. It's keyed. Can only go in one way. The GS drive shafts are the one's that are not keyed and can be installed wrong. Not to mention that I had the vibrations with the old drive shaft too! I was hoping (3 months ago) that the shaft was the problem but the old shaft was actually in great shape once we pulled it out and inspected it. Since I'd already bought the new shaft for $800 and the whole rear end was taken apart, I went ahead with the replacement. It made no change to the vibrations.