The stock fuel pump should be just fine. I had to replace the one on my '65, in about 1998, and it was the original pump.
My '74 still has it's original in it, but I did have to clean the points on it, after it had been sitting for 13 years. That's all it took.
If you feel paranoid, go ahead and change it, or at least do a pressure and volume test on it, but I would guess you will be OK.
Are you still running positive ground?
Jeff