We have an old '97 Galaxy without roof rails. I've just bought a set of Thule roof rails off ebay with the adaptor set for a Galaxy. These should clamp onto the frame over the doors on both sides. Is there any particular place on the frame where they should clamp, or can they go anywhere along the door frame? We also have a '95 VW Golf and this has markings on the frame where you need to fit the clamps, but there is nothing like that on the Galaxy. Thanks, Andy