Hi John, Viv's car sounds like a very interesting one. The Kurtis Kraft 500X ran; generally, either a Chrysler Hemi V8 with a lot of Lincoln add-on parts or a Corvette V8. The "El Caballo" moniker came from one of the early 500X hot rods. I believe that the #524 car was the only US Sports Car ever to run in the Italian Mille Miglia. Nice choice!

This should be a fun build to watch. See if you can get Viv interested in joining the HRW Board, so that he can post some pics of the car as he builds it out.
Allan