There have been posts in the past regarding Model Engineering - if it was still in business or not. For what its worth there was a classified ad by Model Engineering in the latest issue of Hemmings for 4 and 5 speed adapters. Based on that I'm assuming that Gene is still open for business. No web site listed, just an email address and a phone number.
He’s still around.....just hit and miss as to whether you catch him. Return phone calls are the same way.