Let us know how you make out. if you are just using the door and no frame be sure to build you own frame inside of you framed opening, and allow for the difference in that some parts of the door will be thicker so make it so the reveal is the same the whole way around the new window that you are putting in. Good Luck Tomorrow, and I will be on periodically throughout the day so if you run into problems I will try and help.
Joe~~