So I still have dreams of an rv10. 50k for rebuilt io540 still seems nuts.

The io470 v,vo offers the same power and with a composite cs prop, all else being equal, the same weight. Granted it's longer which moves cg forward, but for my mission that's not a bad thing. These can be had with good time remaining for decent prices. Why? Because they aren't the favored engine for RVs is my honest expectation.

Can one reasonably mount a cont 470 on a dynafocal 1 or 2 mount?

I except there's other clearance issues but let's start with the basics