I am looking for a roof rack that fits a volvo 740. I have measured the roof of the car and it is 51" between the rain gutters. I have found some deasent 48" roof racks but I am not sure if the legs can be adjusted to compensate for the 3" that is missing. What size roof rack do you have? If you have one for sale I m interested if the price is right. Thanks so much for help.