The problem is the TQ arm mount. I am sure you could fab up a TQ arm mount on a 8.5 and might be able to use it but there are better alternatives out there. They installed 9 bolt rears on certain Z28's and GTA T/A's in the 80's and early 90's but they are expensive to upgrade if you wanted a different gear. They are stronger then the 10 bolts and will bolt right into a 3rd and 4th gen. Other options are 12 bolt and 9 inch rears and also the Ford 8.8 rears are being converted into F-body rear ends.
You can also roll the dice and build a 10bolt and pray it doesnt break like I did!!
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Jeff
2002 WS6 T/A.. M6..Built 383 TMR tune..461rwhp,458rwtq
2009 G8 GT. Bone stock 13.6@103.. Vararam Intake, GXP Axlebacks, LS2 FRC's
1998 Corvette Convertible, Vararam Intake+Power Duct, Fast 90/90, Ti Axleback..12.8@110
2003 Cobra Convertible 10th Anniversary
http://www.fquick.com/slow-v6
Local car cruise schedule..
http://www.cliffscalendar.com/
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