I'm sure this question has been asked 100 times before, but how fast have you gone with this old pump? And how much power can it support (in your experience)?

I run one in my Challenger with 3/8" factory line, sender and tank, and honestly I really like the simplicity of this fuel system. Havnt raced it yet, but ran it hard through the gears a few times and never noticed any fuel delivery issues. Its a 505 w approx 550hp, 4 speed and 3.55's. I plan to throw a few more horses at it this winter (maybe get it closer to 600)and I'm guessing I'll be pushing it at that point...