I may have posted them years ago. I dug out some old renderings I created in 2006, one of a converted 4-door pic, the other from a '69 Biscayne 2-door that was for sale. That one I had to draw in the bumper, valence, fender ends, side markers, plus I pasted in '70 tail lights & exhaust tips.

I also created other stuff, like a '70 Buick GS California that Buick didn't make. I also created a depiction of an actual '70 Bel Air sport coupe LS5 that I saw in person in the early 70's.