I agree with Joe, many times things were changed on 'day 2'. One interesting note, the '69 Yenko Nova that SCW is restoring right now came with rally wheels per the GM paperwork - that was a first for me! Based on that car, I thought it might be possible that this rally green car could have come with the rally wheels as well. Previously, we thought that they were changed, or had trim rings added to the XT wheels.
Another interesting point on this rally green car is the prescence of the SS on the tail panel, and the lack of 427 or YENKO emblems. I realize that each of the '69 Y-Novas could be different, but this pic actually makes the most sense. Why would Yenko spend the time to drop the bumper, remove the SS panel, drill out the SS emblem, reinstall the panel and the bumper, and attach the 427 & YENKO emblems? I beginning to think that the rear panel was left alone, the SS emblem was retained, and no additional emblems were attached. If a YENKO emblem were to be attached, I would think it would be a stick-on version placed on the decklid just like the Deuces - but could be on either side of the lid. IMO, the reason we see the Y-Novas with 427 & YENKO emblems on the tail panels is because the first car restored was simply duplicating the '69 Y-Camaros - ie; remove the existing emblem and put the 427 & YENKO ones in the existing holes. Opinions welcome!