Posts: 3480
Location: Elk River, Minnesota | Hiya,
I know of one company that when you purchase your rock tamer it will come ready to install because they ask for a measurement before they send it. it is called towtector.
I hope I am not going against any rules here, but here is a link to their website:
http://www.towtector.com/
what makes this one a decent product (by reviews) is that the rock tamer goes all the way across the rear of the truck, which evidently helps keep rocks from shooting up from the inside edge of one tire to the opposite side of the boat. It is not a flap but two sets of those brush-type that you commonly see on Fed-Ex or UPS semi-truck trailers.
Steve |