air dam

Are these first wider-head bolts the ones holding the front air dam on Gen1? not these narrow headed ones holding the rest of the roof rack to the roof Also, do the air dams fit from 2000-2004 fit any other year 2000-2004 as well? So an air dam from 2000 would fit 2003, and 2002 would fit...

Does anyone know where to find a replacement for the rubber strip at the bottom of the air dam where it makes contact with the roof? Four years of Louisiana summer sunshine have destroyed mine, and Nissan does not sell it separately from the air dam. I have looked all over and can not find a...