LA 360 or Magnum 5.9

5.9 mags are easy to get good power out of.
The one I built makes good torque and power in my old truck.

Odd thing is my next build is a LA teen, just to use some parts up, going to be basically a stock rebuild, no boring just hone, a good cleaning of parts, maybe a clean up of the crank journals, and valve job, and a cheap summit cam, with a 174 B&M supercharger with a small shot of nitrous.
Going to stick it in an old challenger, and drive it like I don't care if I hurt the motor, I have three teen motors, so parts breakage, if it happens don't really mean anything.