Used quite a few of those pans on different makes in the 70s/80s. Pretty hard to pump one dry with reasonable oil pressure, 70lbs and under. Especially in a quarter mile car. Unless your launching 4' in the air, 7 or even 6 qts shouldn't be a issue. One exception was a 428 fe Ford i did that had 95/100 lbs of pressure. Those engines required that for those heavy *** cranks, lol.