I have a 1940 Coupe that has probably the worlds worse sub frame graft I have ever seen. I would like to locate a replacement frame, hopefully close to Denver, but I do not know what years will interchange with the 40. I have been told the 40/41 are the same and someone else told me no, the 39/40 are the same. I am hoping someone here knows or has a Hollander Interchange that covers this. If I cannot locate a complete frame of the year I need, any idea what years of Plymouth the front clip could be cut off that would fit? Thanks for any help.