Wow, many answers smile
Performer RPM was hitting the hood with stock dual snorkel air filter so I picked DP4B which fits.
Ignition is MP dizzy recurved to 18 initial 39 total with mopar orange/blue box (blue has nicer idle but doesnt pull above 5k).
It's true I could shift her at higher rpm like 5500-5700.
Higher stall won't help mi at takeoff with f70-14s...

KISS..
You effectively talked me out that solid cam swap smile I'll stick with that voodoo and maybe change the old stock exhaust pipes with a new mandrel bent 2.5" system first.

Thanks everyone for your contribution, great Mopar family. Greetings from Poland: