If I were going to do it all over again I would buy the one that Weaver posted the link for. I think it would deliver a better result.
The GS does pretty well stock. The kit adds but not quite as much as you one would think. So, you are paying a decent amount of money for a small increase.
Likes: It does look better with the kit. Dislikes: You can catch the unit on curbs, etc. when backing up. You have to be careful backing up.