I have a 59 elco with a 327 and a sick th 400. The car has been a project. When I did have it rolling I could instantly tell that speeds of 70 to 75 were going to be an issue. ( 6 cylinder stick car originally). So I hunted up a 200r4. I wanted an over drive gear and everything I read this would fit nicely into the car. The drive shaft is a mess. Gunna have to redo it. But it leads me to one issue I hadn't over come. See pic. The ol drive shaft need a bolt on yoke while the new tranny needs a slip yoke. Is it as easy as outing my drive shaft with a slip yoke? Can't see why hat wouldn't work. Thought I'd ask first. Thanks your help.