Hey, I am new to this site and love it. I have a question for you. I just bought a 2005 f150 Lariat theft recovery. They stole the IC and the ECU when I go to car-part.com to search for the new parts. The is multiple different options and they all require the Part number on the ECU and IC to pick the correct part. Am I able to get any part number as long as I match all the options (floor shift, Lariat, engine size, 4x4, etc) Or do I need that part number to match for everything to work. Thanks for the help