I've got the advantage of tearing down a 1951 218 and a 1950 228 at the same time. I've come across some weird supply chain things. I use Rock Auto for reference and supply on a lot of my mechanical repairs on my more modern vehicles with great success. My mechanic friend asked my to get an overhaul gasket kit for the 228. I assumed the the 218 and 228 would be the same part number, but nope. I've swapped the head gaskets between engines and can see no difference. Rock lists two different numbers for the overhaul kit and the head gaskets, though thus far every gasket looks the same on the two engines. Maybe Rock has some bad data in the system or there is a thickness difference on the head gasket? I hope I don't run into too many situations where I have to guess which part number to choose.
I planning to build a updated version of the 228 addressing as many internal systems as possible, starting with lubrication. The goal is to have a low maintenance, reliable and strong flat head 6. I'm not concerned about my engine looking authentic, in fact I'm hoping to have a very unique looking flatty under my hoods. This site and others are a gold mine of data and building on the success of others is what I plan to do. Any engine related successes or more importantly failures you could share would be most helpful.
My other post seems to have strayed too far of course for the moderators. I'd like to thank all the posters that provided me information related to the engine swap, it was very helpful.