Engine decking issue(help)

Thinking about it, take a piston/rod/ bearing and install it in all four corners. Measure. It would be nice to use the longest piston/rod. Install them all in the same cylinder and measure how far in the hole they are. Then use that one. Measure how far it is in the hole it is at each corner. The two variables left are deck height and crank throw. You don’t plan on blue printing the crank so the deck height is what you will need to change. All this is nice but its in the machine.