the kit should work for either carb, the difference is more of a calibration thing, just slightly larger venturi for the larger engine. usually just gaskets & such in a kit, you clean & re-use your power piston & main jet. I use #000 steel wool to polish the power piston so it moved freely in the bore. With the carb disassembled, you can run a small wire through to determine which hole operates the power piston. that is the hole you need to line up with hole in bottom gasket. I think the other hole will be unused(blocked by the carb to throttle body gasket when assembled) brian
