You don't hear of the 7018's very often. I would think it's certainly worth a try to get her running. Stuck valves are someting I look for when buying a non-runner. I've picked up three now, that, with a little finessing, got back to running condition with nothing more than some time to pop the head and free up the valves. Either way, that would be a great machine to get working again. I'm sure there's a way to get a magnum in there. Probably do some searching over at ST...someone's done it with a 7000 series, I'm sure.