Thanks man! Please read the commentary Above and below the engine to see how I went about doing that, YES thats pretty much scratchbuilt! I molded the engine myself from resin plastic, as well as the heads, and then used 2 nicely chromed kit parts for the valve covers, and detailed the hell out of it! I literally made EVERYTHING you see in the engine in the back of the Jeep, but the valve covers!
The actual engine is a model I made a mold from a AMT-Ertl 426/440 block....