Ayup solorider, ive done the ais removal on 2 gen1 nows the 1st kit i used is the one you have in you post and the other one using justy's kit, now my opinion i prefer the ebay kit because it leaves the area free of all plugs and looks neat, and at the time i could not find the link on ebay
so went with justy's kit and if your not aware the quality of his stuff is A1.
How the ebay kit works you push the cap in and in the other end is a ballbearing as you tap this in it pushes the wall of the cap out making a perfect seal and is pish easy to fit.
Dave