8 3/4 Third Member?

66fs said
Probably a 741, cone style Sure Grip, 3.23 ratio.

I agree but it all depended on what the customer orders were. But if it was a dealer stock inventory then it was 3:23ratio. I’ve seen 489 and 741 in plenty of 8-3/4 rear axles in Demon and Dusters and Darts.