had Classic Performance Repair (CPR) install my gears today. They mostly do work on older mustangs. It was the first time they did a gear install on an 05+mustang, but the have done gear install on 8.8 rear ends; nonetheless, they are meticulous and ensure everything is just right. I have not had a chance to really test the gears yet, but from what I can tell it will be an improvement. No gear whine to speak of.

 

Is that in Raleigh?

 

No, Santee, CA. Here is the website
http://www.cprstreetmachines.com/
The mustang on the home page is a 67' I think it has a 347, and it's turbocharged.