Magnum head and exh manifold ID

I just went out and tried a set from a stock 318 and a set from a stock 360 and they wont fit, they might if you put a spacer under them, 1/4" would do I think, but not with out. I suppose u could strip the baffle out and stuff but then you would get oil finding it's way out I am sure. But plain an simple the LA aluminum covers do clear and clear it well. I do have a set of them also and have checked that fit and it was perfect.