Fish,
The flow test I described above was done with the minimum amount of fittings. As it is well known that bends, fittings reduce flow. Also the reason I used a larger filter was to reduce pressure drop/flow loss. All those fancy polished fittings look nice but you pay a price in flow. My engine doesn't make anywhere near 1000hp, but I wanted to make life for the pump as stress-free as possible. You are probably aware the rule of thumb that at WOT an engine needs 0.5 lb of fuel per HP. Since the Carter pump is outputting 16-18 psi [ not 6 ], it has plenty in reserve to overcome G forces