Magnum head swap compression increase

Son of a *****.....

I thought I had a pair of magnum heads. I got off my *** went outside and looked and I actually have one 308, or 302, or some closed chamber la head with a magnum head sitting on top.

I'm gonna say this right now. If I have the junk laying around to make a motor with an la head on one side and a magnum on the other I'm doing it.