Because the front fenders on the AD trucks tuck under the side of the cab you definitely will have to cut them. When you have decided exactly where and once the cut is made you'll need to make a couple sheet metal pieces to weld on the inside lip of both the tilt section and the section mounted to the cab so they will keep their shape. Also this "lip" you'll make is a very good place to mount an alignment pin/cone setup. They are very easy to make and work perfectly. Just use a 4" bolt as the pin (use a grinder to round the end so it's not square) and you can make a simple cone out of sheet metal but make sure the cone is only 3" high and has a hole in the top the size of the bolt. The bottom of the cone will need to be 1"-1 1/2" in diameter. Mount the cone on the lip of the tilt section and the pin on the lip of the section mounted to the cab. Make sure the front end is closed and both sections are perfectly aligned before permanently mounting the bolt and cone. Once done, when the front end is closed the cone will come down on top of the pin and the two surfaces will be perfectly aligned once the pin projects through the top of the cone.
Also it is very easy to use a linear actuator to open and close the tilt front end. They run a couple hundred bucks but with the flip of a switch it will open the front end and all you have to do is flip the switch the other way and it automatically closes. With this system you don't need latchs since the actuator has plenty of power to hold the front end closed.
I used this same setup on my pro-street 41 Chevy. Pics are here