When I had the bumpers put on at the Expo, I was debating if I should keep the old ones or toss them. Since I was going on a week long trip after that without a place to store them other than on the top of the trailer, I decided to toss them. If you need a bumper, let Southern Style Speed know. I would recommend one of their bumpers, but if you don't want to shell out the coin, they may be able to hook you up with someone who has a sliver GX and is getting a new bumper.
Utah was great, I will certainly go back! I was a little hesitant to go on a big trip with so much new gear, but it worked out better than expected. I watched the bumpers go on, and I got a good feeling as Kevin showed me all the places that he over-engineered. He did strength testing on the front bumper, and the stainless mounting hardware broke before the bumper did. That's a solid bumper. The Turtleback Trailer did great also! Once I got the tire pressure and weight distribution figured out, it towed like a dream and only had a few minor issues (mostly from us being unfamiliar with it).