Need to know where you are at, and what exactly you want. Do you just want a general mechanic or do you want one who specializes in certain aspects of auto repair. The 70's trucks are quite easy to work on, any reason why you don't want to do the repairs yourself? Welcome to FTE.
I work on vehicles as my ol broken down body allows. I also have a neighbor with a load of older ford truck and bronco parts so working on the 70's stuff is fairly easy. If a person is not in a big hurry, I do good work.