and possibly others sell the kit to mount the Road Glide fairing you already have to the V-Rod you have to buy!
My Plan A would be to remove all the unnecessary junk from the CVO Road Glide you already have.
The radio goes, the Tour Pak goes (have you seen how much they weigh?), fit lighter wheels, perhaps a different seat etc.
Fit an anti-gravity battery, expensive but you lose 18lbs in weight.
Sumax fibreglass mudguards will get yet more weight off.
The footboard mounts are big heavy lumps of steel, they could be replaced with something nice and lighter. (please order two sets if you find any, I want them too!)
I use a Givi topbox and an Electraglide seat with the rider section cut-down to be about the same as the original Road Glide seat. That way she still has the very comfy passenger seat.
The radio is gone, the speakers are gone, the front wheel and tyre is 13lbs lighter using a now unobtainable Dymag wheel.
I would be using nice light 17" wheels if I were doing it now.