I'm having the ring & pinion in my 8 3/4 swapped out with a different gear ratio. I am starting to look around to see who can do the job which got me to thinking, could a new car dealer shop do this job? My reasoning is, the situation seems that with new cars computerized, diagnostics and getting hands dirty are fading. Let the computers do the work, r&r part; re-set computer. Is this overly simplistic? I've already figured most of the old school mechanics are gone. But, I'd like to think that there are some gearheads that work at dealership shops. So, is this an area to look into? Or should I locate a shop that specializes in this type of work?