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Mark Yacavone · 09-13-2010, 04:28 PM

The Impala 12 bolt is the only option for that car. ( with a 4 arm housing and suspension)
All others are not even close with the mounting brackets.
You could cut the brackets off the original rear, but no other 12 bolts are that wide.
You NEED to use 12 bolt pro gears too, a girdle cover ,and a good spool and axles.

You will need to fabricate new upper and lower arms too. You'll tear the ends right out of the original one.
Also you'll tear the left lower arm mount off if you don't address that issue before hand.
Don't short cut any of this . It's not worth it.
Now you'll be able to start counting the runs on your ring and pinion and re -shimming it periodically as it bends and cracks.
BTW, you're looking for a 65-70 housing.

09-13-2010, 04:28 PM	#9
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,815 Likes: 2,903 Liked 5,121 Times in 1,952 Posts	Re: Impala wagon rear end The Impala 12 bolt is the only option for that car. ( with a 4 arm housing and suspension) All others are not even close with the mounting brackets. You could cut the brackets off the original rear, but no other 12 bolts are that wide. You NEED to use 12 bolt pro gears too, a girdle cover ,and a good spool and axles. You will need to fabricate new upper and lower arms too. You'll tear the ends right out of the original one. Also you'll tear the left lower arm mount off if you don't address that issue before hand. Don't short cut any of this . It's not worth it. Now you'll be able to start counting the runs on your ring and pinion and re -shimming it periodically as it bends and cracks. BTW, you're looking for a 65-70 housing. __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers Last edited by Mark Yacavone; 09-13-2010 at 04:34 PM.