The '73 Imperial will be even more involved. More options mean more stuff to unhook, and you also have the rubber mounts to deal with. The frame is longer, so it goes back farther and now you are pulling the front seat to get at the mounting bolts. My back hurts just thinking about having to pull that Imperial bumper!Dam, was hoping removing the engine in the 73' Imperial would be like removing the K-frame in my A body. Yikes. Better get mentally prepared.