Hey, I wonder, anyone know about 2006 Ford f-150 supercrew GTR?? I never hear it and never see that before. My friend want to sell to me. I don't know about f 150 GTR. is good worth or what ?? his truck is 15,000 miles and no scratch, as still brand new. He asking for 25,000 dollars. what ya think ??? That what my friend told me that truck are " The Limited Edition package for the Truck comes with a full exclusive euro LA West exclusive full body kit, LA West exclusive leather wrapped seats, GTR embroidered on the seats, 20' chrome rims, low profile tires, dual exhaust, wood grain dash / doors / and steering wheel, and a 100% functionable dual cowl air-induction hood." Here pic

similar to the mustang gtr perhaps, http://www.youtube.com/watch?v=WlDLybhuOH0 ?

http://www.classyauto.com/v/used/Ford+F150/GTR+Super+Crew/71641
http://www.cars-on-line.com/35070.html

there's a price comparison for you.
Ultimately what your getting is a Stock FX4 Crew Cab F150 with a lot of visuals added to it. If you like the way it looks you should get it, but check around and see if you can just build one cheaper if that's the case.
I haven't seen any performance increases, everything I've read is just a bunch of visual upgrades. So expect it to be a bit slower than a normal F150.