Hi ever one, im new to the mustang game so i must ask. My buddy is giving me his 3.73 for free. It has 20000 miles on it and im contemplating if i should put it on my car. I have a 2013 v6 with 7000 miles. Advice is appriciated i have search and it has been done. I was told that it could cause a noisey rear end but how bad. You know what i mean. Thanks again for check it out.