The 4502 is a half-pack, with only two mounting feet.http://www.rackattack.com/prod...k.asp

Well, I finally got my Vibe and all the roof rack hardware. For future reference, this is all that I got from rackattack.com:Fit Kit 2119 for Toyota Matrix - $49.504002XT Aero Foot Half Pack - $67.504502 Crossroad Half Pack - $69.75LB65 65 Inch Load Bars - $53.10Total - $239.85This set up uses the M...

One other question. In this setup, are the front bar and back bar at the same height?edit: To answer my own question, the rear bar rides 1-2" lower than the front bar.

Most excellent threat, as Bill would say to Ted. I've been looking at the Matrix/Vibe, and am leaning towads the Vibe due to the factory roof rack. I want to cartop my 14' Laser sailboat, and I would need a rack system exactly as described here.If I understand correcty, the 450XT is the correct kit ...