I've got the MoPar Manual Blues.
Back when we rebuilt the engine for my 46 P-15 (in 1980 or 81), there was no internet, and as I recall, we didn't have a service guide / repair manual. My dad just knew how they did it at the Chrysler-Plymouth-DeSoto-Dodge dealership where he worked from the mid 50's up until the early to mid 60's. They built the engines tight, then drug them around the block there in down-town Tulsa, until they were free enough for the starter to turn the engine over on its own. According to the MoPar manual I have now, that would result in damage to the main crank bearings. There's all kinds of stuff I've read in the engine section (so far) that I'm pretty sure we didn't do. This test and that test, this special tool and that special tool. Testing equipment, use a micrometer for this or that (we didn't even have one). It goes on and on, and gives me the blues.
(I have never yet started this engine. I met my wife the following year, and then a year after that I moved from Oklahoma to here in Ohio, where she's from, and we married that winter. Then in 85 we moved to Brazil, where we worked in Bible translation for a small tribe in the Amazon until we moved back to the States in 2003. My car continued to sit in my dad's shop in Oklahoma until just under 2 years ago. Sorting parts, etc., working on what I can while running a business here, but not much time to work on it yet.)