Yep, as Adam notes, they don’t use the original rivet holes. I think that’s ok though, these are further from the panel edge - the originals are frequently so close that they distort the edge. The windows also provide backing plates for all the new screws.
The gas strut mounts are integral into the frames.
I did find out the hard way that it’s better to have a little too much sealant and have to clean it up than to have too little. I accidentally failed to cover some of the original holes and water seeped in like crazy on my first window. I ended up having to go back and apply the sacred strip-caulk, speak the appropriate litany, invoke the name of sealant, and say 20 hail Marys. That seemed to do the trick.
I’m 100% pleased. Especially at half the price of Front Runner.