One other thing, that oil tank provides a place for the oil to de-aeriate, where in a wet sump system, it really doesn't have that opportunity, it is subjected to all the turbulence generated in the cranckase. I once saw a V8 60 midget motor, that had been installed upside down, and dry sumped, that was years ago, and it worked surprisingly well, course most airplane engines were running upside down, and dry sumped, so why not? Good luck! Bob