Many Fords are equipped with a reservoir similar in appearance and size to the Dorman part. As for size, when is a man rich enough or a car powerful enough, etc. That canister is apparently capable of operating the heater and evap systems on Ford gasoline engine vehicles with no problem. It is plastic, however, and some ford reservoirs are located near the exhaust manifold and a plastic replacement would need to be moved to a cooler location. I have replaced the rusted out #10 cans on Ford E and F models with the plastic ‘soft ball’ and never had a problem.