Kit aircraft designer Chris Heinz established Zenair in his garage in the Toronto area in 1974, moved to a larger manufacturing facility in the town of Nobleton (north of Toronto), and finally to Huronia Airport (formerly Midland Airport) 125 km north of Toronto in Tiny, Ontario in the 1980. This unidentified Zenair model has been stored outside the Canadian factory for many years. It seems to be a stretched Zenair CH200/250/300 used during the development of a four-seat model. More details welcome.