maybe this is old news/common knowledge to those who have played with the LA platform for awhile but I'll say it anyways.
I purchased one of these
http://chucker54.stores.yahoo.net/mopcasvalcov.htmland two of these
http://chucker54.stores.yahoo.net/moprubgrom.htmlas they are both advertised for fitting the MP cast valve covers. The package of two does fit but the individual ones (P4529882)
are not tall enough to full seat down into the cover. Side by side the center 'stepped' section is about 1/3 to 1/2 taller on the package of two. Not sure what good the individual ones are unless they are intended for stock production cast magnum covers ?
On a very positive note all of the mopar parts were made in the USA. I bought the 'as cast' cover package since this is going onto a B-van there will be some modding required. On the corner of the box with the label from chrysler to mancini there was the 'NS1' printed on the tag... I guess FIAT is pulling the plug on these.
Got the Moroso blue silicone w/steel shim gaskets and they do indeed fit the covers as well. Tomorrow I'm going to try the dealer since I work just down the street from them and see if the late LA/MP valve cover gaskets are still available and I may order a set or two for the shelf. Bought the moroso parts just prior to find the thread discussing them vs the MP units.