Thanks for the reply but my cousin decided that no option was worth the investment so he sold the vehicle.
If you had asked me a month ago, I would have said Jasper did quality work. However, since then I have been doing some serious overhaul work and painting on my '79 IHC Scout II. When I pulled the motor to clean it up and repaint it, I decided to check the main bearings while I had the pan off. The engine has about 20k miles on it, and the bearings were all unevenly worn for both mains and rods. These engines typically run 200-300k miles without batting an eye, but this one looked like at the present rate I'd be lucky to make it to 50k. In addition, the counterweights on the crank had been beat on pretty hard with a hammer and one had even been filed down. Looked recent - no rust. Hard to say who did that though, but if it wasn't Jasper, then the crank should have been fixed or replaced while in their care. I specifically sent the block into them and requested the same block in return (to keep SNs matched), but that's no excuse for crank issues.
I took the motor to a reputable machinist in the area who will peform a total work up on it and true all components; then do a professional balancing job on it; 1500 - 2000 bucks depending on whether or not the pistons survive being pressed off. Jasper charged me over 3k for this engine in 2004.
Perhaps I'm unlucky, or perhaps the "assembly line" approach to engine rebuilding isn't always the best way to go.