Does anyone know the length of the shortest factory 12 bolt axle out there? I am trying to narrow the rearend in my '69 and do not want the expense of custom length racing axles ($400+). Only want to narrow by 2-4 inches so there must be some factory axle offering that is shorter than my current axle. Does anyone know the length of the factory '69 (12 bolt) axle? What is the length of a '72 Chevelle axle? How about a '66 Chevy 2? Any help would be greatly appreciated. Thank you!