My search for a roof rack for my Sport led me to the Thule website and their TP42 or TP54 roof mounted tracks.  These are mounted with expanding nuts through holes drilled through the roof.  Clicking on the "Does this carrier fit my vehicle" button leads to a selection process that identifies the only options as the 400XT and 400 XTR removable racks.  I asked (via email) their customer service if there was some reason the TP rails couldn't be used on a Sidekick.  The reply merely pointed me to some FAQs I had already seen.  None of those answers really answered the question.  Has anyone out here in the real world successfully used these Thule tracks on a trackick?