If I were you looking to put the speedo and ignition switch on to the tank I would look for the parts from a wide glide there would be a bit of messing with wiring and the tank would also need to be replaced so new paint job etc etc etc or replace the bike with a wide glide as it has forward controls 21" wheels ignition switch and speedo on the tank
Sorry this has not been a very helpful post
Brian
Sorry this has not been a very helpful post
Brian