Trouble with belt drives, external pump or dry sump, is they're driven by BELTS. If you go that route, I'd recommend some sort of Accusump-type backup plan.
Lehman made pumps like you're looking for. Here's an example that is driven off the front of the cam, mounts to the timing cover (for an sbc), no belts...
Quote:
|
one pump pulls oil from the pan and the others step up the pressure in stages
|
You'd need to go with an electric, remote water pump...