You can usually tell a "goodun" for some vehicles ie good the body is, normally when they have original paint or very old paint. Hard to explain in words, but you can. Just like how you use your hands to feel that a panel is straight when you are file finishing it. Not sure how many here understand what i'm talking about, I know Greg will. I know I can walk up to an old Holden or Torana and just know that it has a good original body, but it has to be old or original paint. This is why I say don't buy pretty or shiny old cars. Always buy the ones with faded and over-polished paint. Look past the bling at the core of the vehicle. Like our mums always told us to do with people, and we still dated the local bimbo (or at least had a crack!).