Aah... I had a feeling that's what you were up to. Did the same thing to run a ThermoQuad and make a "fake Commando" out of my 360. Only issue was the height of the unit, the factory 360 manifold is taller than the 273's; had to use a shorter filter to tuck the cover down low enough to clear the hood, but still keep it high enough to clear the throttle linkage. A Wix 46036 element worked for me with the 9" base on my '66 Dart.
