difference between 9" and 12 bolt??
The above link may help you out.
http://www.eppautomotiveperformance.....html?item=145
The link here is to the Moser nine inch that I recommend. Bob
Instead of removing the cover on the back of the rear end to do gear changes, the entire center section of a 9" is removed from the front.
Racers like to use 9" rears because they can easily swap between gear ratios by swaping out the center sections.
Google both of them, and it will be very apparent why they are different after you see some pictures.


