hey guys, i have a set of heat exchangers that i havent gotten around to using, and don't think i will. I cleaned them up a while ago, and they're in descent shape. obviously not concourse, but they're useable. first off, can anyone tell what years these can be used on? also, one appears to be longer than the other....is this correct. thirdly, how much are these guys worth? and lastly, does anyone here want them? thanks!