I do my own gears, it isn't hard, but it is precise, I've seen threads from people doing their own with no experience and I always like reading to see how it turns out, if you have above average understanding of gear relationships its a very simple job, if you know how to shim to achieve proper gear contact its easy as well, really the mechanical part is only 4 bolts (and about 10-14 ring gear bolts) and the pinion nut, they come with directions and it's up to your comfort level, the specialized tools are cheap. There are a lot of threads on how to do it to gauge your comfort level. You could also save money buying the gears and master install kits yourself and not let the shop determine your quality, you can get Motive Gear 4:88s and Motive Gear master install kits for both axles for $498 from Rough Country. Good luck and let us know how it goes.