Trickflow trackheat or performer rpm

I had a Performer RPM equipped 451 that would hit a wall power wise at 5800 rpm. I swapped the manifold to a Holley SD and picked up substantial rwhp and 3-400 rpm. Those results suprised me. My 511" responded in kind when we went to a M1 from the SD.

There are a million "rules of thumb" that can apply but you will never know for sure unless you test.