I have completed my lil job.
I have the ducati 5.5" rear wheel installed on my bike.
My issue was i needed a 5mm spacer to push the tire out from the chain.
I also mounted a 170/60 tire in the rear, as ppl suggest that a 160 is not wide enough to properly fit on a 5.5" wheel.
Took my bike out for a ride and have to say, it feels great.
Waiting on the chance i save up some money before i go for an upgrade to the front end and exhaust.