roof racks are pretty strong...saw a old late 80s civic get lifted by a crane only attached to the roof rack its self...it was a promo vid for the rack company. ive been running thule. its really hard to get all the parts to fit it to our roofs. the fit kit its self reads...fits-90-93 celica and 89-92 skyline or some years like that. but that just goes to show how hard it is to find the right parts.