LA vs Magnum Gasket/Seal Compatibility

Ok so this may be a dumb question but I have a complete LA engine seal kit from a project that got scraped, I now have a magnum 5.2L.

Are rear main seals the same?
Can I use head gaskets from this kit?


I understand the timing cover, oil filter housing, water pump gaskets are the same, and I know I need a magnum 1 piece oil pan gasket and the magnum valve cover gaskets for the swap.