recommendation for fuel pump

I fought the same fight you're in. Didn't want to go electric. My advice is forget it. If you're really in the 700 HP range, ain't nothing out there gonna feed it properly. Yeah it'll run fine, but put a gauge in and see what happens at high RPM.
I ended up doing an complete in tank system from Tanks Inc. Best move I ever made. Quiet, lasts forever (supposedly) and I'm good to 1000 HP and fuel injection, if that ever happens. Beautiful factory looking tank, with a built in sump and baffles. Real high end stuff for a reasonable price.
As a last resort ya might want to check with Clay Smith. They do make a smallblock pump, but it wouldn't fit on my engine. Might have something for big blocks.