62 lancer engine swap HELP

Several years ago I saw a 62 Valiant for sale at a gas station in Salt Lake City. I liked how it looked so I went to look at it. It was an extremely sanitary car with a 408 and four speed. It had headers so I asked the guy how he did them. He told me that they were Spitfire Headers built by Harold Johnson and they were for 64-66 A-bodies but they fit with the 408 in a 62 Valiant without modification. So if you can find someone parting with an old set of those they might be an option. Laysons has them made these days so they would be available from them if you want to pay the price. You would need to make sure they actually fit because I'm basing this information on what I was told by the guy selling his car. So, if you are interested in headers at all someone on this forum may be able to confirm fitment.