360, LA360, or Magnum 360?

if you can i'd do an compression test on the 73 if thats the one you choose, powerwise the 5.9L has a higher net power rating than LA 360, but i imagine with same carb, intake and exhaust they would be pretty close

Thanks, 273. This is what I was hoping to hear.
Is true that the main difference is the improved head design on the Magnum? If so, since most of these are cracked and need to be replaced anyway, sounds like a moot point.

I like the idea of having the right "year" motor in my car (even if it wasn't an available option that year). I can imagine running some aluminum heads and a hot cam down the road.

BTW, how does the early 360 compare to the lower compression/cast crank late '72 -'73 340 motors? Do they share any internals? How many bolts on the main bearings?