Its still has some demand. Shipping my be expensive but advertising it on For A Bodies Only or ebay would be the way to sell it. The early Offenhauser unit has the bolt holes at different angle than the 1967 and later. I had one and was planning to run on a 360 but traded it and some $$ for an Edelbrock Street Tunnel Ram. Its not that the ports are so very small- thats expected as it was designed for a 273. Its that there's not alot of meat around those ports. I placed a 360 intake gasket up to my Offenhauser and the mounting flange really needed to be bigger to seal correctly when mated with the much bigger 340 360 port. But many have run ir with no problems on a 340. It just wasnt something I wanted to try.