Mopar 400 block 8 sleeves

Jim at Racer Brown says I should do
263/269@,050" 452/461 lobes 106 + 2

This is the closest to my initial idea.

Jim is like a "cam guy's cam guy", you won't go wrong taking his advice. He custom ground a cam for the 360/5.9 Magnum in my Duster and I couldn't be happier with it; performs amazingly, sounds awesome and has excellent street manners. Looking to get a custom cam from him for my truck 440 build as well.