Correct, you can use whatever sidemarker that you wanna use, you just have to make it fit. That is prolly why the A6 marker is chosen. It only requires about 5 minutes of filing/dremeling to make it fit. Looking at that other VW sidemarker, it looks like it would work, but obviously you would need to cut those clips off. OR you would have to modify your fender to work with the clips...your choice. Where did you find those lights on the top? They look like they are sealed, which is good cuz you don't want condensation in the housing if you can avoid it...I can't...cuz I have a "rigged" up socket. Anyways...to answer your question. Yes, as long as it fits through the hole and it is flat, then it will work. Good luck sir.