Don't know, mostly the hastle is aligning the caliper with the disk.
Might have to make another mount.
I don't have a scout to look,but most custom harley frames you make your spacers,mount the wheel,the figure out the caliper by placing it where you want it then make the mount fit.
Of course the belt alignment determines spacer length and placement.
To make spacers I usually use bushing stock.
Comes in three foot lengths,any dia you want.
Motion industries is great for buying that.