Hahnda is correct, you would have to relocate the coils, not something real hard to do but remember your wire length, it is going to be different when relocated. I had both and wanted my 350 tank on the 500 because it is very cafe styled,
but ran into the coil issue, i've since donated my running 350 four to a good buddy who got bit by the cafe bug, now he's finishing what i started, plus he's real happy and so is the wife to get rid of "ANOTHER" bike that was "taking up" room in the garage! Good luck Marco
DWYJ