Hi all, I just joined the site and wanted to throw out my first question. I think I have found the drive shaft for my charger. Just wanted to ask the fourm if these two cars use the same drive shaft? I have a 1972 charger se factory 400/727- 8 3/4, the donor car is a 1973 charger 440/727 - 8 3/4. are the drive shafts the same?