probably the same mods you would have to do to fit it to a watercooled, Obviously the airbox has to go as for any other mods who knows, this looks like a one off you'll have to make mods as you go along
No point in going for 530 chain 520's fine and much lighter as for sprocket sizes it'll depend on what you do with the bike you won't be touring on it so maybe a few teeth bigger on the rear sprocket might be better for the lols
my 750's got an 1100 wp rear swinging arm and 1100ws forks problem I've got is mounting the speedo to the top yoke as on the later models they were mounted on the headlight subframe
Was looking forward to seeing this finished that R6 tail looked good, off road sounds good there's a lot more places to use an offroader in Spain than UK