RE: Pump for 46VXDF
The O.S. pumpunit is intended to be used with the O.S. Max Type 46 carburetor. The two were intended to be used together.
We've not used the other pumps, so have no comments abou them. We don't know if the Perry Micro Oscillating pump can deliver enough fuel for your engine. You'd have to check the makers of the pump.