Go to the Olds faq at <A HREF="http://www.442.com" TARGET=_blank>www.442.com</A> to find out more info on the type O rear. While not rare, they are different than everything else which makes upgrades difficult. Since originality is not important, I would go with a type C (chevy)12 bolt, or a made to fit 9 inch housing. Either would be a better choice for extreme use.<p>[ 05-01-2002: Message edited by: 4-4-2 Dave ]
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Dave
OCA Member 028803