I have thought about doing this in the past with my 41 pickup. Best I can tell is you would need the entire 39 assembly and it would just be a bolt in. If I could get 6 volt halogen bulbs for the 39 sockets and a duel filament amber bulb for parks and turns I would go for it. Other wise I lose my turn signals and those old bulbs with the reflector set ups were terrible to drive with. I had a 38 Lincoln with the same setup as well as a 36 Dodge pickup and I can say with conviction, sealed beams were a vast improvement. Tim