Where i live powerglides are turning into gold. All the dirt track racers are buying them up. I've never heard anything bad about the powerglide. I have one in my 66 impala, and my cousin has one in his 66 impala 396 SS. I say go for it, it would be a refreshing change from the TH350, TH400, and the 700R4 seems everyone is running now days. Im guilty of this as well, my jeep has a Turbo 350, and my rat has a Turbo 400.