Actually the engine I picked up to turbo is an 84 and it came with all the accessories, including a/c. So I have the same ps/air pump bracket you have Adam. I took another look at the engine on the stand and the only part of the bracket that will interfere with the belt going on the middle groove of the crank pulley is the top air pump mount. And I'll be cutting that off anyway and replacing it with the upper arm from the 79 (photo). Which I would guess is why it didn't cause a problem for you either. So I think I have a pretty good plan for the alternator mount now. Thanks!
Rust free on the east coast no less. I snapped it up as fast as I could! It has the good TH350 in it too (not the metric one). I did have to spend some money on brakes, exhaust, shocks, belts, hoses, etc. to make it reliable first. So true cost is a bit more than $300.