What applications use SB 727’s?

I'll be looking for a couple small block 727's in the near future and need to know which vehicles used this trans and what to look for in a salvage yard. These will be used in an A and a B body.
If I understand correctly, all 340 & 360 cars(with autos) used them, but what else?
Trucks?Vans?
What are the best years to look for?

Thanks in advance for the assistance.