I am just wondering, i dont want to do a full rebuild on either of my engines, cant afford it, but i have from now until spring to take one of them and do whatever i can do in my garage to freshen up one of the engines and to replace maintenance parts and if i find anything damaged. What is the least i should do on either my m10 or m20. i am not getting them ready for boost, just want to do whatever you would do if you cracked one open. also is there rebuild kits for an m10 and an m20. Thats most likely the easiest way, or at least it would give me a definitive list of what I need to buy.