Just wondering if the 2011 supercrew has a set of UAS clips on both passenger and driver side in rear.
Also is there a tether strap in behind the rear seats too?

Thanks

 

There should be clips in all 3 seating postions. I know my 2010 does and the top tethers hook to a strap that is fed over the top of the seat.

 

Yup it's standard.

I would recommend that you take the seat out once in a while so it doesn't leave a permanent divot where the top strap goes over the seat. I have had the booster car seat out of my car for about 5 years now and the indentation of where it was is still there, the foam and leather never recovered but it's a small price to pay for the safety of your kids.