Ya the 70E only Bendix units can be big bucks. If your just wanting a good driver unit that looks correct then the cardone units that Dayclona listed are a good way to go. If you look at alot of their's you'll see that they are actually Ford boosters. Ford used the same Bendix unit in millions of cars. You can see where they cut off the 2 master cylinder "Ford" studs and installed the 4 "Mopar" studs. Still works just fine.
Bendix units are black.