Magnum Heads

So does this include standard 5.2L magnum heads, or only the 5.9L R/T magnum heads? Is there a significant difference in performance between these when bolting them onto an LA engine? At some point in the future (like when I get a new truck someyear) I was going to take off my heads from my '95 5.2L Dakota and put them on a rebuilt LA 318 for my Scamp. Right now the Dakota has 203k miles on it, so those heads are well used. I'm assuming they should be okay with a rebuild on them. The truck still runs great, so I'm also assuming the heads are in fine shape.

Sound like a good idea? I've heard this setup makes great power....