Bolster holes and bolster pin sizes Sizes

[Mister Lee]

I'm planning to move beyond the shake-the-box skill level for On30 and want to provide new trucks and underframes for some conversions. I'd prefer to use Bachmann trucks, esp. the ones found under the EBT hoppers. Is the screw hole for the Bachmann On30 trucks the same size as the ones Bachmann uses for their ordinary HO bolsters, or will I have to buy a whole On30 car for sacrifice?