I stopped by Patrick's place quite often 30 to 35 years ago when Patrick was selling the adapters to go along with his 3.55 ring set. He had the adapters on the shelf back then. I have no idea how many he had made back then. I always thought the idea was OK for a GMC 270 or 302 or a Chev 261, but I think a 216 or 235 Chev would have been a disappointment. And unfortunately the business has been closed for several years and Patrick has passed on.