Really great experience last week at Dunk's. I found them through a Google search, after my mechanic found a major differential problem, relating to a strange noise that was getting worse. (400,000 miles on my truck!). Called for a diagnostic appointment to confirm, and to get a (what was sure to be expensive) quote on the diff. Because of the anticipated expense, I even dropped in one day at Dunks ahead of time, asking lots of questions about diffs. The guys were great to talk with and I knew I was in good hands. On the day of the appointment, after a test drive and putting the truck on the rack, they found nothing wrong with the differential! We even got on the phone with my regular mechanic and Dunk's at no charge did additional verification, per my mechanic's request. Turns out, some loose metal mud flaps were the culprit. The mechanic's notes were very detailed, complete with specs on my rig vs. standard specs, etc. Lots of good info in the notes, plus I was able to talk directly to the mechanic. All in all, a very pleasant experience.