there are to many "what about this" for them to be built on the line.1 why would Chrysler,with those key-punch cards, put a 383 fender tag on if they were going to put a 440 in it, could have made it up to start with and its own build sheet. they knew when they where going to be built why not have the correct paperwork ready? 2 why would they need the special clip to hold steering joint together,could have left it off till the body was set down on the k-frame. just a couple of things that makes me wonder. did you work there putting engines in or did you talk to someone? it would nice to get this verified and not just hearsay for the good of these cars. the years are slipping by.