My husband is saying I need to also get this
Thule 477 Short Roof Adapter if I want to build a 2001 Ford Mustang kayak rack with the Thule 400XT Aero roof rack system. He says I need this because my Ford Mustang is a two-door and the 477 Short Roof kit stretches out the 400XT roof rack so there is enough space between the front and rear crossbar to carry my 10 foot kayak safely. Anyone know if he's right or not, he's right usually less than half the time that's why I'm trying to find out and hopefully save over hundred bucks!!!