[Rob B]

Originally Posted by BILTIT

Ya true, i have never really measured the section width.

I need to give Moser a call soon and get some info. What did they say the F-F would be? Is it based on your rim BS or just a general they use? I am running 15x10 5.5BS.

I think i am going to use the Moser disc brake setup in the rear.

59 3/4" is the width they use for a stock X body housing, OUTER axle flange to outer axle flange. That is the measurement they want from you. Basically the back of the mounting surface of your rim to rim. They will also need to adjust for the thickness of whatever brake your going to use but you need to let them know when ordering. I have Aerospace disks, the rotor hat is .25" thick so they take that in consideration when building your housing.
Using a 5.5" backspace, your housing will need to be around 2" shorter each side than the stock width based upon what I came up with mine and from all the other mini tub threads I read all over the internet.
Mosers brakes aren't cheap so you may want to look at others available for about $100 or more less (US Funds). I went with Aerospace components because thats what I already had for the front and didn't want two different brands on the car.
I will say Moser's complete rear ends are top notch, quality pieces. The one I just bought for mine is the 2nd one I've had them build for me. I went with a Dana over the 12 bolt. Its only 20lbs heavier than the 12 bolt without brakes from what they told me and I'll never kill it.