Magnum heads

...I don't believe there are any differences between the two. They both have the same chambers, same valve sizes, ports, bolt patterns, rocker gear, etc...

magnumswap.com is a great source for the info, but in a nutshell, you need the heads, magnum head bolts, oil through lifters, corrected length pushrods to compensate for the different rockers, correct gaskets, magnum intake, valve covers (although you can use LA covers with good gaskets).

I think it's LX guy that did a really good thread on this...you run a search yet?