Door sills

ive seen a bunch of pictures with different color door sills, or different sills all together (ie. momo, sparco, greddy). i was wondering how to get those off. also, anyone have any tips on putting a shift boot in an automatic? thanks.

The sills clip into the metal below them, and are riveted I think to the carpet. Pry the plastic away from the metal and you will see how they come off.

I made my door sill covers out of carbon fiber