Well, you know you could put the can from your previous pump on the new one. depending on the adjustment you may be able to get a slightly shorter belt which would tilt the pump a bit more and be just enough to relieve that rub point, I would cut a larger hose and create a rub sleeve for that...
That looks like a GM pump, many applications, search on here and you should find a post with a year/model application, the main diff is the return hose location/shape.
The press on pulleys require a tool that is really cheap now.