I always thought the Cavalier was a sharp looking homebuilt aircraft, tail # C-FGDC is likely one of the best I’ve seen. It’s based on the French GY-20 Minicab (one of these is on display at Sun-N-Fun). Latest design ownership is with MacFam. Common engine options are the Continental O-200 & the Lycoming O-235

https://en.wikipedia.org/wiki/MacFam_Cavalier

The wooden aviation web site has even more details on the aircraft

http://woodenaviation.com/103%20cavalier.html

The EAA has additional info on the aircraft but not a dedicated page I can find.

https://www.eaa.org/eaa/news-and-publications/eaa-news-and-aviation-news/bits-and-pieces-newsletter/12-15-2017-my-unique-rg-cavalier-taildragger

https://www.eaa.org/eaa/news-and-publications/eaa-news-and-aviation-news/bits-and-pieces-newsletter/12-15-2017-a-cavalier-attitude

EAA Chapter 1541 has a local build documented https://eaa1541.org/members/newsletters/february-2016/builders-corner/

Jonny Sprague’s YouTube channel has a few videos on his Cavalier, here is one below:

Outerzone did not have any plans on this aircraft, quite surprising as it would be a great RC model.