I think Yenko produced many vehicles not all of which were copo cars. In the town next door to where I am there is an A title original owner Yenko Nova with all the documentation. Its got all the trim, the seats, the whole Yenko package on it except that its a 350 with a turbo behind it. Its in show condition but the owner rarely takes it anywhere because hes tired of listening to know it alls calling it a clone or a fake.