Damn good info

I'm kinda dumb. Other than the oiling passage, is there any other difference?
LA hydraulic roller cam block has the same oiling as non-roller LA block.
First year or two Magnum blocks actually had LA oiling holes drilled.
Remaining Magnum blocks do not have LA oiling holes drilled, but these can be drilled if really desired. LA heads can be used by running the stainless steel, roller tip, shaft mounted LA rocker arms like those by Comp Cams and copied by PRW and Speedmaster, that allow oiling through hollow pushrod.

Any Magnum block can be built to replace an LA engine as long as the proper parts are used. If an LA timing cover is used on the front, you can use LA oil pans, oil pump and pickup, water pumps, and v-belt pulley setup. Just make sure a stock 360 Magnum rotating assembly always gets a 360 Magnum harmonic balancer and weighted flex plate so a common neutral converter can be used.

If a new LA rotating assembly with forged crankshaft and internal balance is used, you can obviously run the neutral flex plate, harmonic balancer, and converter.

If a cast LA 360 rotating assembly is used that is still external balanced, use those LA 360 parts as you would on a full LA 360 build.