COPO 9511

[Schonyenko2]

While Pete is talking about 9511 COPO for 4.56, and 4.88 availability, there's a 2nd sub discussion going on about rear ratio availability in 69 Novas. They are connected, but I suppose are two different discussions.
The 1st discussion about the 4.56-4.88 rears lead to the 2nd when I had some people acert that 3.55 was the highest ratio (BT) and 4.10 was a dealer installed option. I can't refute that acertion with any paperwork, or documentation, nor at this time can Greg Roberts.
So we actually have two discussions going on here that really are pretty inportant, and could change the way we look at some Novas. The Yenko 69s are one big important example. We assumed they had BV 4.10 rears, but now are wondering if they were BTs that Don changed to 4.10. We would hope to find some answers here. So, please try to find some documentable evidence to show how this all was done. If we need to move the thread again to a more heavily trafficed area., that's fine, as I'd sure like to get as much input as possible.
Or if the mods would like to split the subject, that's fine, but at some level I tend to think they may be related.
Schonye