did you have these on your truck? Did you get the coil bucket hitting? I'm not 100% sure what it actually does cause I've never seen it happen. I have a 07 4wd off road. I'd like to get spacers but you can get a new pair online for 60-65 bucks shipped. So I would def. take you up on these if the price was alot lower. Not tryin to low ball ya, just stating.
There are alot of forums on here with info on leveling kits. Leveling kits can range anywhere from $50-$200 just need to do research. The max you want to go on a 4X4 is 1.5" or you will get coil bucket contact. The max on a 08+
2WD is 2" or you will have the same problem, those of you with 04-07 2WD, recommended is 2-2.5" but I believe you can go up to 3" if you shave a little off the lip of the coil bucket.
This is all from research I did when I put my 2" on my 2010 2wd.
I hope this helps someone.