I had one on my '68 and found out that if it's there, the emissions inspectors expect to see the pump and hoses too. The far simpler non-Thermactor or air pump alternator brackets are easy to find and emissions people don't expect to find the rest of the air injection system. They may when seeing the bracket, require all that crap reinstalled, to pass the Bronco. I think all Broncos built with your bracket had the pump.