5.9 magnum flywheel on 5.9LA

Hey guys I know the 5.9 magnum flywheel and LA are balanced differently. But my question is this... what will it take to convert a 5.9 magnum flywheel or magnum flex plate to an LA crank? Will it even mate onto the surface? I’d like to go nv4500 or 46rh on my 360LA Powerwagon with NP435 and NP205 combo, preferably the NV4500 5spd.