Once you pull off the top yolk , get them drilled for the handlebar clamps . You will save some money that way and if you want to go back to CR then just plug the holes with some kind of dress up buttons if you care about that. Getting the original Sport Handlebar will need to come from Norton. I have not seen bars like those in the aftermarket , especially that have the Norton logo. Measure a friends Sport and get the dimensions close for the hole spacing . The thru bolts are M10 diameter.