[YENKO DEUCE REGISTRY]

The '69 Novas were not COPO's, so they did not get the COPO 'BE' version of the 4.10 rear - they received the standard 'BV' 4.10 version.

The '70 Novas were indeed COPO's, and received a uniquely coded rear - 'CBW'. However, according to our research, the 'CBW' rear doesn't appear to be all that different from the prior year's 'BV' rear - ie; no special plates, springs, or clutch packs. We believe that the 'CBW' code installed under the COPO was necessary because 4.10 rears were special order only in '70, and the 3.55 was the lowest ratio under RPO's. We are still researching this though.