Here's the bottom line on "Real World Engine Weight". My Cunningham, G62 Ultra Lite, weighs 4.1 lbs with Mount & ignition. Nothing else comes close in the same class. My engine was built lighter than the regular Super Lite. I know that Ralph would build you one like mine if you requested him to. My engine has all the "Steel" bolts, replaced with aluminum bolts. If interested, tell Ralph it's the engine he built for Bob Laine.