I have a 78 360 out of a Jeep I want to put in my Javelin. I know these have the lower compression heads. What is the easiest way to increase the compression? Is there a thin headgasket available? How much could I shave off the bottom of the head, what could that get me with stock pistons? I will probably reuse the pistons. The engine doesn't seem to be worn too bad, and I'm trying to get by as cheeply as possible.