YEsterday i was racing my buddy in his 347 stroker fox, and when i got up to around 100, the car started making a fast, strong vibration, i could really feel it in the shifter. Now, i know my ujoints are fine, and my rear end and tranny are in good condition, so i think its my driveshaft. Can you have a stock steel rebalanced? how much? I would buy an alum. one, but for the money, i really dont think its worth it, and its bigger so it hits the E. The stock driveshaft is damn light so i would like to keep it, because i have other priorities!