Back in 1959, Wally Troy built his ideal sports car from scratch, with a tube chassis with aluminum bodywork, 3 spd, and dual quad 283. It's open-wheel design made it into Oct 1960 Hot Rod

The open-wheel, aluminum body was crafted by a talented, Springfield-based body man named Cecil Funk, with a silhouette that echoed exotic sports cars. Aircraft-style Plexiglas windscreens and Dayton wire wheels added custom-car flavor, and the car was highlighted in a four-page feature in Hot Rod magazine in October 1960

https://www.rcnmag.com/garage/elemental-appeal-1

https://www.7fifteenmotorworks.com/