I currently have a Fortrex 45" and want to go to a Ultrex 52". I know everything should fit and bolt right in place, will the extra length all be inside the boat or will there be any additional length outside the gunnel? If anything it would be the head extending beyond the gunnel and not at the prop? Just trying not to have to modify the cover. As I understand the complete Ultrex unit needs changed and you can't reuse the base. Boat is a Falcon F215. Thx