Yeah that Lathe Werks knob should fit just fine as well. They're pretty much the same as the TWM ones. You just need to play with it a bit to get it to the right position. I like my knob (no pun intended) to sit as low as I can get it. With the RL on the Fiesta it's hard, as you don't leave enough space to pull it up, yet still have the engraving line up (if you decide to get engraving...I did as I plan to paint it red).
I get a little bit of a click sound when I engage it into reverse that wasn't there before, but it still slides in perfectly.