[Elwenil]

Make some brackets. If you are talking about the Howe pumps that circle track racers use, lots of them have been mounted to Mopar small blocks, and there may even be a bracket kit out there, but I'd just make my own. Simple and cheap.

 

[Elwenil]

I'd try to modify the stock mount. A little welding and some spacers and you should be able to make something to work ok. You just have to be careful to get the pulleys lined up good.