I have been looking for this part for years, these do come up now and .......later on the BB. 750-101, 1300 - 1600cc Veloce exhaust ends that mount to the header flange.
I dropped off an engine at Domenic's, White Plains, NY, while doing some paperwork in the office area I noticed that Santo had one of these Hangers about his desk. I asked about the Hanger,.....the supplier is Additive Restoration,
the web site is www.additiverestoration.com. I purchased a few, to save on shipping ,....I believe each one is about $30.00 plus shipping cost. I am just passing along this information, .....

Plant Bumper Gas Wood Metal
Wood Font Metal Symbol Number