where to find a 360 magnum center sump pan?

So your basically just wanting to change to a mid sump pan for the magnum, i don't know if they make a magnum mid sump pan, i just went through installing a magnum 360 in an A body, i had to get an LA pan & run the LA gasket, because you can't use the 1 piece gasket on the LA pan, if they do make a magnum mid sump pan i'd like to see it, because then i was mis-informed by many, but i don't think they make one, wish they did.