Running into Problems with narrowing my 9" Rear. Anyone KNOW (NO GUESSING) what the stock length of an LS based F-Body 9" rear is?

Stock length of a 10bolt will work as well.

Looking for measurements from axle to axle.

Thanks guys,
Blake

 

65" from rotor hat to rotor hat so i would say about 64 1/2 to axle to axle

 

64-1/2 is on the money....axle flange to axle flange