550-0070 was a silver spyder with red darts and red interior, fitted with engine # P90069. It was completed on the 14th October 1955 and shipped to the US and bought by John Hudson who entered it into the Pebble Beach race in April 1956. Only after two months, it was bought by George Keck from Seattle on the 8th June, who raced it from Canada to So Cal, with most in the Pacific NW region. Keck’s first race was on the 24th June at Shelton where he finished first. He race 550-0070 until September 1957 and traded it with JP Kunstle in 1958 for 550A-0104.

The spyder was shipped to the west coast and sold to Doug Sharman in 1960 and raced it at tracks like Pomona, Santa Barbara and Riverside, finishing in the top three cars at most events.