This is Rotus ,"RO700000014"
I bought it from Rob Mitchel who bought it from Chris Custer's son at Chris's estate sale after his passing (I have bills of sale). Chris used it as a demonstrator and in magazine ads. Don't know when or from where the seats cometh but I felt they were too large. Has a Toyota 2TG engine, from day one I believe. It's a brute of an engine.