LA Pan with MAG gasket...NO WAY.

Did the OP ever get this solved?

I did exactly what MagnumMopar did on my LA block with an LA pan and a MAGNUM gasket. No issues.

The thing I don't understand about all of this is that there is no difference between an LA gasket and a Magnum gasket around the rear main cap, other than being one piece on the Magnum gasket. In both cases, the gasket is intended to be captured by the slot in the cap, and the ridge in the pan squeezes it. So all of the complaining about how the gasket doesn't work in the back makes no sense unless someone can't get the LA 360 gaskets to work either.

Only thing I can see is if someone was trying to install the gasket on the pan and then bolt it up. Gasket it supposed to be on the block so the slot in the main cap captures the gasket.

I can see that being a pain, trying to install the pan with the gasket on the pan and not the block. But, I think I had to do exactly that when I re-gasketed the pan on my Duster with the motor in the car when I couldn't get the gasket to stick until I had the pan up against the block. In the end, I think I got it all located and then pushed the gasket into the slot in the cap before I started putting any bolts in it.

Sorry, kind of late to the party, but the OP never posted if he got it working and I am really struggling to see how it was such an issue to so many people.