The gauge shouldn't leak vacuum. So other than odd readings on it from where you install it, it shouldn't effect anything to install it anyplace.


1961 ford f500
1953 3100 five window (https://www.facebook.com/1953-Chevrolet-5-window-1533405913413610/)
1955-2 3200 big window (https://www.facebook.com/Leep3200/)
55yrs as a mechanic and retired. (kind of)