Got my new piston and connecting rod today but it has new rings on it. WOuld like to use the old rings to keep everything in the engine equal. Has anyone ever removed rings and replaced rings before? It is calling for a special tool which doesn't look like an old school piston ring tool. I'm guessing it will be a fun little tool to try and track down too. No dealers around me even do engine work on the 4.7L so none of them have the tools.