It seems James Glickenhaus likes off road racing as well as road racing. He's doing a new iteration of the Baja Boot once owned by Steve McQueen. Looks like two possible inspirations for builds here! Enjoy.

Name:  Baja Boot.jpg
Views: 117
Size:  120.4 KB

Name:  Glickenhaus Baja Boot II.jpg
Views: 128
Size:  64.6 KB

Here's the link to the posting on a design site I frequent for inspiration.