I've had my sliders from Jim for about a month now and they've been awesome! The installation instructions were well written and it only took me an hour to install them (by myself with a bottle jack). I definitely recommend a step bit as it makes the drilling the holes a breeze.

Again, kudos to Jim for making a great product! I can't wait to pick up some of his other items as well. My only recommendation to possibly improve his sliders is to ship them separately. I had some issues with Fed Ex and their delivery.