318 combo

Factory Magnum rockers are out there.

BTW, my friend said the reason he's running beehive springs was because of the lift on his cam. He purchased a cam for the 1.5 total lift numbers and ended up having to adjust his build, because he spaced the 1.6 magnum ratio.

I have not heard good things about the Comp lifters. Anything made from extruded aluminum is a bad plan. they lose adjustment quite quickly.

Check into Hughes Engines. Someone else may chime in with a more affordable rocker setup that is good quality.

There is a pushrod that is to length for an LA to Magnum head, but the best route is to measure. Hughes has an adjustable rod to measure as well.