What Carb for Poly Stroker

Won't it bolt on without a spacer? Just a gasket. It has the dual mounting pattern. You would need to check that any passages in the carb base are covered by the carb pad on the manifold.

Observation: the pump arm is in the 2nd hole to give more pump shot. In all the years of using these carbs, I have always been able to use the outer hole which gives less pump shot & better mileage. Efficiency of the design.

When removing the top, you only need to remove the circlip on the pump rod. The assy stays in the airhorn.