I've been contemplating this and crunching numbers for some time now and have finally decided to do the swap. I have an 03 LB7 and have a few questions about some things. I've read through some other posts and they have answered alot of my questions. The big thing is I would like to get it as factory as possible with the wiring of it. I've seen that there is a way to get cruise to work, does anyone know exactly how that's done on an LB7? And what do i do with my TCM? And tuning? Any help, tips, or tricks would be greatly appreciated.