Well Summit's site was pretty much useless except I think I did positively identify it as a Moroso # 64981. It's a $60 Billet spacer, not the cheaper aluminum spacers. Billet eliminates porosity according to Moroso's website. They say it's designed for 4150/4160 carb patterns which I believe an Eddy is. I'd really like to get what I'm asking. That's only 1/5th of the price new and it's pretty much like new. Pm me if your still interested. Thanks