Great. I bought the upper kit since I was unaware of the build date issue. Working with Christopher to get the remaining. It is interesting though, I have been told the change was from a weaker bicycle style chain to something called a double link design. This is all second hand, some mechanic I talked too so I dont know. Maybe someone else can fill in accuracy. I do find it interesting that you didnt see a difference in the chains. I think I see in the pictures you did have 2 different types of tensionors. The originals are the big orange plastics and the laters have metal and plastic and used shorter bolts I believe. I wonder if someone was in yours already and changed the chains too.
BTW if you are on the bottom end, I need a clue about the gears on the crankshaft. Our gen 1 seem to be 2 piece, and we cant get that anymore. Well sort of. Christopher has a batch, but at 145 bucks a piece thats insane. I think he gets those from a Jag source. The original was about 30 dollars apiece, I found an old listing on a ford site, but cant order anymore. The later one is 2 sprockets on one piece. I thought I ordered two singles on closeout from another ford dealer at 23 bucks apiece, but its the 2 doubles. Does your lower primary gears seem the two or the one. I am hoping I can use the double. The mech that did my uppers said the gears up top were worn sharp, so thats why I am looking to do a whole refresh.