hello everyone,
I am fairly new to the site and id appreciate any help and or info/advice i can get.
I have a 1965 mustang fastback, and i have a 9" rear end out of a 70's mustang that id like to use for it. Im going to redo the gears and repair it since the rearend itself is to wide id like to narrow it so the tires wont be sticking out (not really my style). would it be cheaper to buy a built 9" or fix repair/upgrade this one?.... and how do i go about finding the propper width to cut the rear end?.... if anyone has information on this project and or pricing i would really appreciate the feedback

 

http://www.kevinstang.com/Ninecase.htm

The 65/6 housing measures 52.25" end to end. If you are able, you can narrow the housing yourself. You can make a small adjustment to clear a particular wheel or tire selection. Mine is .5" narrower than stock to fit my tires and wheels. The ends must perpendicular to the axle line, otherwise you will roach bearings. You will need to buy axles to fit the new width. I recommend finalizing your wheel and rear brake choice before going any further.

New housings aren't terribly expensive. Many rear end shops will narrow a housing for $150 or less.

look up dutchman axles, currier and moser for pricing.

 

Or you can get wheels with matching offset for the look you want.
Late model wheels tend to suck them in, so a longer axle might work fine with them.

 

is that 52.25" from calipar to calipar? and would this give me enough clearence so that the tires sit just inside of the wheel well? im trying to use these rims they are 18x10

>>>> http://www.wheelsmustang.com/bmz_cache/1/1cf536e4d285611f451fcf1fded1c2de.image.190x187.jpg <<<<<

About the wheel and brakes i was thinking of just having all that done at the shop that narrows my rear end...

 

Usually measure from flange to flange, IIRC.

 

My post said housing ends. Nobody measures from the calipers. Overall width is measured on the mounting flange of the drum or the rotor. You will not get 10" in there without minitubbing it or blowing out the quarters with some big fender flares.

You are in for a lot of work with those wheels. The right way to do is to place the wheels and tires (you will need to cut the wheel wells to do this) and figure the rear end from the wheel mounting flanges.