I’ve tested a few different set ups on my roadrunner. 511ci pump gas motor with Indy SR’s. My six pack ran pretty much identical to a 1050/4150 AN carb on a ported TM6. Both went 10.90’s at 4000# through mufflers. I did tune a dominator (for another car) on the rr. That felt real strong but I don’t have any numbers to back it up. Butt dyno says it had the six pack covered though. Same deal as you, I wanted to prove the six pack could at least run with a well prepped 4150 carb which it did.