Question: what are the most collectible porsches?
Answer: 1 – Porsche 935 Street (1 unit) 2 – Porsche 914/8 (2 units) ...  3 – Porsche 993 Speedster (2 units) ...  4 – Porsche 964 Turbo Cabriolet (4/8 units) ...  5 – Porsche 991 Club Coupe (13 units) ...