Yes, these will fit the GLI models that came with the Votex pieces from the factory, or a Jetta that upgraded the the GLI side skirts and rear. They are made to work with the Votex pieces, thus they will not fit correctly on the base model Jetta.
Here, i went outside and took some pictures of the mudflaps, my car is dirty, so sorry about that, with all this rain lately, I didn't feel like washing it. I honestly have no complaints whatsoever, they hold up greater than expected, I have hit some bumps and expected to see a mudflap in my rearview mirror, but they stay on, and I didn't even install them per the instructions
Here you can see the tab showing that needs to be anchored that I reference below, that would have solved any issues, but I was a tad lazy at the time.
Here is the only fitment issue, but if you installed them properly, you'd be alright. I chose to only install with the screws, and didn't anchor the tab at the top of the mudflap, as directed. They were fine until I scraped the flaps on stuff.
Here are two pictures of what the rear flaps look like, I did these correctly, so fitment is 100%.