I have a Ponzol gold plated neck for my VI, I've tried it on my Selmer AS220 with great results, and let another person try it on his VI he liked it better than the original neck. Was worth every penny, I wouldn't trade it for double what I paid for it. I had a older silver plated alto mouthpiece, I think it was a M1 and I know it had the largest tip you were able to order at the time. I don't play much jazz on alto so it wasn't for me and I sold it for probably 2 to 3 times what I paid for it a couple years later. Oh yea I think my right hand thumb hooks are ponzol also, although they might be runyon I got from Ponzol, either way their great.