Valjolly Junior
850cc Ruggerini engine, on sale in Udine, IT
Not a modded 126, aluminium tubular frame chassis with similar dimensions and glassfiber bodywork
It was built by an engineering student and his cousin at the time, they used a three wheel set up to avoid crash tests for homologation
Parts were used from 600, 126 and 127, some are of their own fabrication
I could'nt find a number of sold cars, you actually did'nt need a license for a car to drive it and it did 47km with a liter diesel
Got the info of an Italian forum, read and translated on the go, Italian nor English is my native language so....
https://centoventisei.forumfree.it/?t=61919132