First off measure what you need for length and make sure you have say 4" extra for steering play.
Now put all the slack you can in clutch cable that should give you room to un hock the cable mount.
Call witchdoctor tell him what your doing how long the new bars are and he will give you cable and hose
Please add your state and model of bike you have. Click user CP @ top of page and then far left click edit signature. Thanks