I've got the 285/70/17 Duratracs, spidertraxx, a Shrockworks front bumper and an OME 3" suspension lift. I rub on the body mounts up front when turning. I haven't noticed any rubbing in the rear.
Shrockworks
I ordered my Shrockworks bumper in March/April and it just arrived in October. That is at least six months of waiting. They never initiated a phone call or email. And when I did email them, no apology, no offer to make things better. Absolutely the worst customer service...
sr5/se
I bought my '07 SE about 6 months ago and couldn't figure out what carfax was saying by "SR5/Sport Edition" so I emailed them. The gist of the reply was that the VIN doesn't actually differentiate between the two models. You have to look at the vehicle to determine which is which.
-Ken