I just got a Muncie M22 and want to swap out the automatic in my 1968 Camaro. I've been collecting the parts I need and have most of them now. I'm missing a driveshaft (with 32 spline slip yoke). I see Summit Racing has aluminum driveshafts that will fit. I've heard they can be a bit noisy. I'm more worried about how they'll hold up to a big block. Who has experience with those Summit performance driveshafts? Is there a better source for a heavy-duty driveshaft?