How would you mate the two halves of a tunnel ram together?

Rtv black says not to come in contact with fuel. I made a gasket before, but a real pain down in the port area. Anyone use a rtv sealer of any type for mating the two halves? I cannot buy the gasket anymore for the Eddy Stree tunnel ram. Thx, Kevin

This: http://www.acehardwaresuperstore.co....html?osCsid=4d833a01bc7bd29d632df4567b770a2e