Nothing home made to contribute, but I found this article on technical drawings from magazines.
hmetaphorsinmotion.com...Automotive-Illustrations-from-the-50-s-and-60-s-Part-Two
This Pontiac Tempest would make a good foundation for a mortise-and-tenoned wood-framed shepherd's trailer. My Clark Cortez had a slant six. A sidedraft carb or intake makes for a low hood height.