More good information, I've been a Chevy man most of my life, but I'm learning. Anyway she is back on the road. I took her for a 40 mile test run this afternoon. No obvious leaks, and nice and quite. Also has a little more punch; that compression leak robbed some of her power, besides sounding terrible. I'm going to replace the front u-joint tomorrow, and call it a done deal. Thank you to all who offered advice. Happy Motoring!