Za Ruljem had a column in the 1980s on home-made cars. Almost each issue contained one or two. I've seen on-line a scanned article with two dozen such cars. I may post some of them. What I am trying to get at that it will be utterly difficult to track down the builder...
Yes, You right about ZR, but they featured only several better-known self-built cars during in the issues of 1980s... This one comes from another magazine, but indeed from early 1980s... and I have found it only in that one particular magazine...
This means I am opening this for everyone offering two points for naming the builder.