Well ended up at Chas Mann motorcycles for them to fit them, they had to drill a series of holes around my existing exhaust header bolts on cyl 2 &3 just to get them off without snapping the studs.
Once these bolts were off these pipes fitted straight on and F*** me what a difference they make to the bike, it seams to be running alot smother now, my scopion end can has a deeper growl to it and it makes the bike look so much better (mines silver so they sort of compliment the look.)
Overall very happy with them.