The most common REASON for going from EFI to Carb is because there are more aftermarket performance "goodies" to turn your Harley into a "fire breather" without a lot of EPA noise & emissions restrictions as with EFI as well as "off road" or "not for street use" nature of such mods...:s!
So it begs the question of the original poster...what are you looking for with the conversion you are seeking...more easy maintenance, modest or major mods in the future and who is doing the work...all drivers as too how much time and money you have or want to spend. :small3d036: