Magnum swap questions

I see, I guess one problem is I am having a hard time finding a Hyd, roller cam with a long snout, that or I don't know what I am looking for.... The oil pan thing, I thought the magnum 318 had a bigger seal than the LA did thus the reason for 360 LA pan with the center hump? I'll see if I can verify it later, I still got the magnum in the back of the truck....