i searched, can't find anything. will the vent tubing from an 05 sunfire bolt right up on a 99 cavy? i'm looking to customize the round vents into my cavalier dash, but not sure if the square vents will suffice, or if i need/should put the rounds ones in from the sunfire.
I really doubt that the sunfire ducts will bolt in to your cav dash. But if you do manage to put the round vents in your dash the square ducts should blow enough air through them. I dont think you would have a problem.