I have begun the rebuilding of the 4.2 engine from my 77 CJ-7 barn find project. My local NAPA store in Buckeye, AZ has a reputable engine shop attached and run by an family friend of my wife. Its good to have friends with years of experience to help. I opted for NAPA's deluxe master rebuild kit which is a good value when you get it all at once.
I was pleased with how clean the hot tank process got my dirty block and sheet metal. I had given up on scrubbing and even the pressure wash
Happy New Year, Stuart...Pleased that you're getting the CompCams tool. It's easy to use and intuitive. New Melling and other source pushrods are available at a variety of lengths, which should make the selection process simpler. Of course, there are also adjustable pushrods, but that's a more costly alternative. Melling fixed-length pushrods sell individually, so you have the ability to precisely fit individual pushrods.
In the heyday of AMC inline sixes, head work typically meant grin