I would think that if you knew the output pressure of the pump and the capacity of the pump, you could replace it with a comparable electric. However, since Duetz is still an available source for parts, is there a reason to try to rig it, rather than to just replace it?
I thought about doing the same thing with an auto in the driveway, but finding the right replacement is a problem. Most sources don't want to quote you the specs on a pump, just sell you a new one.
David from jax