As difficult as it is to find good tuning/performance shops and people that actually care, I felt obligated to post after dealing with Injected Engineering in Kennesaw GA (Northwest of ATL).
I am not related or affiliated with this shop in any way except as a customer. I had 4.10 gears installed in a 2006 Mustang GT. The price was reasonable and these guys know their stuff. The owner Eric is a Ford master mechanic and worked for Ford for 12 years. Below is their info. My hat goes off to Eric, Ryan, and the rest of the team! Thanks Guys.

Injected Engineering
www.injectedengineering.com
678-449-6871
3605 Kennesaw N. Industrial Pkwy
Suite D
Kennesaw GA 30144

 

Can I ask what they charged you?

 

$520 covered labor, shims, pinion nut?, rp synthetic, friction modifier- I supplied the ring and pinion

There might be places that would do it a little cheaper, but I don't want them wrenching on my car

These guys are worth every penny - there are some things they do that I do myself so I think it's over priced (because I know how to do it)

 

Glad to hear about your wonderful experience at Injected. They are only 1 of 2 shops that I will let touch my car.

 

They are a very good shop!!!!!!!!

 

I am keeping them in mind for future work as well. I worked with a buddy who had a bunch of work done with them. On their website, he owns the 2000 GT AKA Nelly and the blue 2005 GT.

$525 for gear install is pretty good. Looks like I need to start pinching my pennies.