The Magnum pan gasket will work great on an LA 360. It will NOT work on any other LA engine.

Jamie, there is a huge advantage to running the steel core 1p gasket. I've done it a few times, and haven't had a leak yet. I throw the old cork crappers in the burn pile.

Still a good idea to dap a little rtv at each of the 4 main corners though for good measure, although probably not neccesary.