I think fitting the rack to a Sport involves drilling two large holes in the plastic valance to locate the horizontal load bearing arms, the top of the rack clamps onto the top of the rear deck.

You might be able to see it better on mine.

I didn't realise what I was starting when I mentioned thermionic. Sorry to all the luggage rack fans!

With careful tuning you can get an full octave out of a luggage rack.

...and you can transport a huge Fender guitar amp...