3.73 qualtiy differences

Quality..

For a mild set up , approx. 300 HP , there isent much difference. The main thing is noise, and the Ford kit seems to bee less noisier than Richmounds etc. I use Richmounds on my car, and they make a little noise, but the installation went just fine. Good Mechanically quality, nice tooth contact, and ok backlash adjustments. JMO :)