No, screw that slant six and go with the 318. That's exactly what I'm doing and I'm behind you 100 percent. They may be tough and all that but /6's are dogs. You probably have a decent chance of finding a whole driveline from a V8 car or at least the engine+trans combo. I found a 318 and 904 combo from a running car for $250. Hopefully you can do the same. Good luck!