Over on guzzitech, Todd said it is a ton of work. I assume you read stuff there too, but Todd makes custom exhaust, so when he says it will take a lot of work I would back away.
The tilt of the motor has changed, so if you assumed none of the mounts would fit (not sure if you'd get lucky and some would), and the tilt thing, and I'm not sure about the way they fit into the exhaust port ... same size there? But anyway, the tilt might mean bending pipes. So if you can bend pipes, cut off mounting tabs, weld on mounting tabs you might be good to go.
There are a couple of systems now that are made for the V7 iii (zard and arrow) . You might try calling AF1 up and begging for a discount. Gotta be a reasonable margin on a $1800 exhaust system.