Nice FAB on the rotisserie.
I'm confused, did you start with a Mk1, and found after many hours of sheetmetal replacement, to give up, and then found a Mk4 as a solid body frame to use, and convert to the Mk1?
I remember my neighbors having a 1963 Morris mini (bright yellow), and some ridiculous fuel economy (even in the early 70s when they rebuilt it and did body repair).
Wikipedia has articles on this auto. It talks of design drive for fuel efficient because of "response to the 1956 Suez Canal crisis".
I'll keep an eye on your videos.