Be cautious using Magnum head gaskets on an LA- they may or may not have the holes for the oiling passage to the rocker gear. I have yet to have this issue, but I always check... I've heard stories. Better safe than sorry.
The reason I suggest these. Fel-Pro 540SD Fel-Pro Head Gaskets | Summit Racing
But a caution, nonetheless. It may require some minimal trimming at the pushrod holes, I have yet to fully trial fit them.
