You can get all his measurements. You can't have any idea if it will fit from just height and weight and sizing chart since it's custom fit.
He might have stumpy arms and you might have monkey arms, he might have flat belly and you might have a beer gut (no offense). Some people have long torsos, when some have long legs even when they are same height. Some have wide shoulders, some skinny hips etc. It's really quite terrible to have the suit run in your crack or squeeze you around shoulders etc... DUI keeps records of the custom suit measurements, and as an owner I kept mine in case I ever sold my Signature Series. Start with the seller, then go to DUI.