the bigest reason to use a standered pump on a 302 is that the drive shaft for the pump can twist and snap with the extra load placed on it with the high volume or high press pumps.
Which is the reason to not use a stock oil pump drive shaft. I am not sure I would run the stock shaft with a stock pump.
I have one of CME's 302 short block going in my 73 right now. It seems fine. Nice and clean and tight