I have to put a lower crankcase on my 73 CL350 where the PO broke off the left engine frame mount. While I have the engine apart I want to replace all of the gaskets, seals, and rings since they are all original. (5,500 mi & 175 psi comp) I am thinking about going to electronic ignition also. What are the best brands to use? I also want to clean the engine and re clear coat also. Is there anything else I should do while I have it apart?