OPA does everything to everything. EFI/carb, new/old, Ford, GM, import, etc.donsbad68 said:
B&R also does everything but I think a majority of their work is late model Mustangs.
SW Tuning has a C5 as their shop car. They tune/work on all domestics and is known to do excellent diesel tuning also. He writes all his programs from scratch. I've also seen an Old Cobra kit car that was sent to him to completion. I am unsure whether or not he is an import tuner.
Elite works on all cars. He does a lot of general mechanical work but is not limited to anything.
SB Motorsports does it all as well. A majority of his customers now are older cars needing restoration work. He also does show quality paint jobs.
So I don't think any of them are limited to late model Fords, but that is probably the primary source of income for all of them except SB Motorsports (I believe most of his income comes from painting).