If you can wait a couple of years I will have a extra frame as I bought another frame to install a MII front and go with a modern rearend while stll being able to drive my truck. It will be at least another year before I start on it as I have to finnish another project,there is someone who makes aftermarket frames for those trucks and I think its progressive automotive in new balitimore ohio and if I have it wrong hopefully there is someone who might know. I think I read somewhere that the frames are similar up to 46 and a local junkyard has a 41 in it that I think the front part is good but from the middle of the cab on back is very rusty. Jeff grin