Its hard to find, but there is a one piece oil pan gasket available for the 360LA. its a Milodon piece. jegs has them on back order, but i bought mine direct from Milodon for $30 plus the ride. can be bought under part #41007.

Looks a lot like a Fel Pro OS34409R.

there is a fel-pro one piece available to fit the 360 magnum, but not the LA.

I just put a Mopar stock replacement one on my 360 Crate short block. I just asked for a pan gasket for a 96 360 at my local dealer. I like the one piece pan gasket better than the one I had with the rail and end gaskets seperate. I always seemed to have a leak so I`m hoping this new gasket with Right Stuff does the trick. So far so good.

Is there a one piece avaliable for a 318/340 LA

A 5.2 Magnum pan gasket is basically the same as a 5.9 Magnum pan gasket. They are a different part number but it is really hard to see the difference. Basically just two little nubs where the rear seal meets the rails. Not even sure why they bothered creating a second part number.

milodon told me they had one for a 340, but its not listed on their site. i thought the fel-pro one piece magnum seal did'nt have the front pan seal on it and had to be sealed with sealant?