the best place i can think of is joes in vermillion. he had a few left out there and when i was going to put a cab on a 71 i had he had one that was ok yet. probaly best to call first and just tell him you would like to see what he does have because some of it is workable or just needs to be dragged out of the weeds. probaly pretty mucky so wear boots.. two other places are rhoners in willmar and windy hill in long lake down the road. but joes should be able to set you up. i would try them first and trudge around a bit. i scrapped my red 71 at hwy101 auto salvage and last i was out there it was in the way back with one decent drivers side fender, the other got smashed when they ramed something. but probaly gone by now though. its been a year since i was there.
you just missed a nice 72 that went on ebay for 1200, i wanted it because it was very clean, very solid, was a few months back out in little canada. it will go on the list of the ones that got away, but i really didnt need another project.