1. do you have to cut anything to get it to go behind the grill?
Yes, but URD
sends you a template. Its very easy to do.
2. do you NEED a maf calibrator right away?
No, but you should have the MAF and a catback exhaust. Because you are going taking in more air and to see the max effect you will need these things.
thanks and if you guys think theres a better intake out there tell me im open to change.
As for a better CAI, it depends on what your going to be doing with the truck. If your staying on the highway and only doing light wheeling and not crossing deep water the URD is the way to go IMO. But if your doing heavy wheeling in water well there some better choices. And I have the URD intake, MAF Cal, and a Banks 3 inch exhaust.
I hope this helps.