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12-bolt Rearend. 3 series or 4 series??

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06-10-2009, 09:27 PM	#1
Bazooka Keepin it old school Join Date: Jul 2008 Location: Ca Posts: 672	12-bolt Rearend. 3 series or 4 series?? How can I tell if my 12-bolt rearend is a 3 or 4 series? My rear is in bad shape and needs a complete rebuild including ring and pinion.. It has 3:73 gears right now.. Thanks for the help

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