Go with the stock
oil pump. I was using a HV and an ARP
oil pump rod and with 3000 miles on the engine, the distributor gear came apart and took the cam with it. One of the teeth from the distributor jammed in the
oil pump causing the cam and finished off the dist. gear. Everything was trapped in the filter and oil pan. Ford Motorsport confirmed what I suspected and told me to use the standard pump.
The only bad thing about this event was that I was on my way to the Super Chevy show and took a lot ribbing about how I should put a rat motor in my Cobra.