There is a Monte Carlo convert in the 1970 Chevrolet Products video.

"It's kind of amazing that there are so many first gen Monte Carlo convertibles out in the wild since they weren't a factory option."


There were companies making the conversions in the 70's, because the demand was there. No idea how many were produced or by whom, but there were a number of them around.

https://images2.imgbox.com/d5/bf/SsKz3Ofi_o.jpg

From the 1970 Chevrolet Accessories Brochure.