1. 17" wheels
2. 265/70/17 Falken WildPeak A/T (with heavy trimming it should fit the stock spare location by my measurements)
3. Rebuild front and rear diff with high lockup LSD (
www.diffsonline.com) email with your intentions and they will make recommendations, probably clutch pack rear from a 188mm M3 and helical front LSD. IIRC they quoted me $3k a couple years ago.
4. Transfer case: ??? Range Rover Sport locking transfer case (modified and machined to Fit plus actuating hardware) this is where I'm stumped
5. Rig some quick disconnect roll bar links
6. Radiator protection (very low and mostly protected by plastic at the bottom)
7. Full set of skid plates
8. Cage and harnesses (this should probably be first)