Stock rocker set up, is the same as 5.0 Mustang pedestal set up. Run stock rockers, pick your cam ( make sure it is a cast iron gear, or ground on a cast iron core... Comp is notorious for that.. On a budget,call Oregon Cams... They do, sweet work..) install the proper valve springs,& retainers..., (above recommended Hughes 1110, or equivalent...), and order an adjustable pushrod, do your sweep and valve tip contact , with a felt tip. Fwiw: If you like Mopar Action, and Rick Ehrenberg, he did a low dollar Magnum top end buildup... They aren't online, the issues were 2012, 2013- ish.. Made 460 ish hp... mild cam