My friend used to have a '70 Cutlass and we used to go to a shop somewhere around Tampa. I can remember the general area but not the name or anything more specific. I'll talk with him and see if he remembers.

The guy specialized in the Cutlass/Nova/Chevelle. I think he did mainly body work/restorations. But I'm sure he could at least point you in the right direction for what you are looking for.