$168.11, shipped, from Rock Auto for a new harmonic balancer, three drive belts and the alternator idler pulley that's been whining since the truck took a swim in the Gila River a couple of years back.

I still haven't been able to drill out the old bolt. I got a small pilot hole through, but following up with a 1/4" one is slow going.

Ryan, thanks for the tip on the radiator shop.

John B.