Pontiayak,
For some reason, I don't think I ever pulled a 3.08 out of a 69 Grand Prix. I would estimate about 75% of the cars I parted were 428 cars with a/c, and just about all of those came with 3.23s, both open and limited slip.
The few 1969 400 powered cars I picked up had 2.92s. In 1970, the 3.08s were more common than the 3.23s. I think part of the reason is the 455s had 12-bolts, so I didn't part that many 400 cars.
Mike
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