So we all know that exterior body parts are not being made for the 75-79 B bodies, or 79-81 R bodies. However, there are parts being made to help restore these cars. Most people are not aware of these interchanges, so here are some of the parts made for earlier cars that fit 75-79. Some may need modifications. Also, while people like to lump the all the 71-74 B bodies into a group, the 73-74 is a totally re-engineered car. While it may look similar to a 71-72 on the exterior, under the skin, they are actually closer to the 75-79 B body, and 79-81 R body. Auto Metal Direct makes some panels that can be used on 75-81 B and R bodies. Firewall. Transmission crossmember. Interior floor. Left and right rear interior floor pans. Trunk floor. 4 speed hump- if you want to convert a 75 and newer car. Rear inner wheelhouses. Trunk floor braces. Yes some of these parts may need modifications due to updates that Chrysler made to the panels, but they will fit. Now if we could just get them to reproduce rocker panels, quarter panels, outer wheelhouses, and trunk floor extensions!