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
The wooden aviation web site has even more details on the aircraft
The EAA has additional info on the aircraft but not a dedicated page I can find.
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.