Unless you are using an Ai type system, I think I'd skip the front locker. The steering is soo much different when the front is locked. It won't just go where you point it. Plus it may or may not imediately disengage when turned off. It sure would help get out of being stuck though. The solid state hard drives would be sweet too, but those are some pretty pricey little drives. Last time I checked a decent size one was like 4 to 5 grand. I guess it would cure about 95% of your vibration concerns though.

And yes, those are the correct ARB part numbers.