Even moving one piston around to every cylinder is going to depend on the stroke being exactly the same.

I would find someone with a very acurate mesuring device and check the length of each rod, check the pin height of each piston. Use one piston and rod in every cylinder to check stroke (not just deck clearance but stroke) on all 8 cylinders. Then start doing a little math to finger out how to get em all as close as possible.

I am not causing global warming, I am just trying to hold off a impending Ice Age!