I know there are some, I saw some wheels on a car -around say a 75-77, alloys, They were so cool looking, I didn't snap a pic of them-
-ever since I got this new digi uploading photos here dosent work for some reason.
The wheels kind of looked like some vintage late 50's -60's style halbrands but sorta with a globe /hemispherical look with longitudinal and latitudinal lines to them-couldn't tell if they were aftermarket. Bing images does not bring up any pics or luck figuring out what they are. Im told that 92 and earlier fit the gm 5 lug 4 3/4 boltpattern . They looked different enough ~~~ FAST~~~ that they would look in place on the M1