Leaks!

skrews said
If I recall correctly the Magnum oil pan gasket doesn't work with LA pans. You need n LA pan gasket, such as an FEL-1807

This is true. I tried to use a 1 piece gasket on my LA pan and on each front side it had a huge gap.

And x10 on fixing the freeze plug right. I generally use some high tack sealer on them to help prevent leaks