Mechanical six pack linkage

It's been 10.90's in my 4g b body street car running through mufflers. I had a buddy swear up and down the six pack wouldn't hang with a single plane. I ported an old tm6 and built a 1050 annular 4150. Tuned the hell out of it, I really like it, I have the cruise really cleaned up. At the strip it performed identical to the six pack. Even pulled the same 60ft.