I now have a new 1bbl adapter that allows the GM 1bbl throttle body to be used on just about any 1bbl manifold. This includes the IH 152, 196, 220, 240, 264, 265. GM 4 and 6cyl engines like the older stovebolts,. Ford 4 and 6 cyl engines. Mopar 6cyl like the 170, 225. Older flat head engines..etc. The adapter also allows the throttle body to be mounted in any of the 4 directions to allow better throttle alignment.