Sorry about just getting round to answering this, but I had an appendectomy, and my wife had a baby all within 24 hours! OY!
To answer the last question, It's a clunk when power is applied. Not necessarily when I let out the clutch, but on accel, decel or direction changes. It IS getting worse, so I'm at this point I'm just about convinced that it's the rear U Joint. CRUD! Can't crawl under the car to verify it yet (kinda' hurts the old incision.) I suspect, however that we do have a new (used) drive shaft coming.
Is there any other way to fix a rear U joint w/out replacing drive shaft? I only paid $600.00 for the car, so I'm going to have to weigh the cost of repar versus dumping the car at this point. New baby you know.....