Glad 141 brought this up, due to the close confines ('32 Ford) of the a/c comp. and the alternator, the front two 1/2" ports on my air gap are not useable and are blocked off with hex plugs. My question is ...can I run my temp sender and 5/8" heater hose bib off the back two 3/8 ports?? I have found both in 3/8" NPT so I know its possible, can't use the wtr. pump as it has no port on top for the 5/8 fitting. Seems to me like it should work, just have never had to do it like this before.