2007 fullsize levelling kit?

Anyone installed or purchased one of the 2.5" levelling kits for a new style fullsize?

Are they shit or are they worth the $100 or so?

I want to get the front end level with the rear end.

lol im looking for just the oposite im trying to get my new dailys ass end level with the front end i bought some shackles for it but i dont think it is going to do to much justice for me