9" qeustion
You reuse your 10 bolts brake backing plates.
For the ABS and TCS, order the housing and axles set up for it. It is an extra $100.00.
You won't notice any horsepower losses on the street with the nine inch, unless you are talking rwhp dyno losses.
The info found here may help you out. Bob
http://www.exoticperformanceplus.com....html?item=145

