No 8.5" ten bolt was installed under a 3rd gen.
71-81 Camaros only.
Jeg's does a better job online with that kind of stuff:
http://www.jegs.com/webapp/wcs/store...tegoryId=13563
Although they say that the 8.5" was under a 70 Camaro and that is incorrect... but everything else looks right.
but order wherever you want.