ChicagoCorvette Supply was started in the mid 1970's by Al Fierke who also owned/ran Chicago Chevy Vette Fest for decades.I heard he moved to Oregon after it's demise.
I don't know if Al sold the ChicagoCorvette company afterwards,but see their mailing address is Eugene Oregon today,and their phone # is still a Chicago area code,so it most likely is him still.
He's had his ups & downs on many Car forums in the past if you Google him,as well as a lot of eBay - feedback.
He was selling on eBay under the name mztcarb some 20 years ago,then switched to graygracy,and am told he now sells on eBay as MECHANICAL AND MORE.
Chad
I noticed he has two carbs here you might be interested in,dated C8 & D8.
https://www.ebay.com/sch/i.html?_dkr...1&_nkw=7028213