I have a 07+ silverado Xcab with the standard bed I was wanting to know if anyone knew how much bigger these trucks are compaired to past generations. I had a 1989 Chevy truck that I put a soft bed cover on, then sold the truck for a 2002 GMC Sierra & put the same cover on it, I t fit rather well only problem was the bowtie stiched into the cover on a GMC lol. But was wonder if that cover could have fit the newest trucks? Would try it out but sold the cover years ago. But older style parts are easier to get at cheaper prices, so would this be an interchangable part? I'm sure the fiberglass hard style covers would not fit because they are formed to the beds. Thanks if anyone has the measurements of these trucks that may help. Also I read before that due to the brakes on the new 07+ Silverado the smallest wheel you can get is 17 in. which who would want to go smaller but is this right? Thanks again.