2530 (2526) - This was a V-12 chassis built specifically for that purpose and delivered in 1957. However, 2530 was fitted with a 6-cylinder engine in 1958.The bodywork of 2530 was similar to the works cars that season with the only differences being those necessitated by the V-12. As noted, after testing the V-12, then being fitted was a normal 250F engine, it was taken back to the factory and not seen again until Argentina 1960. Chassis 2526 was renumbered 2530 when sold to Creus, which makes for some serious headaches since supposedly there were two chassis numbered 2530 on the grid at Buenos Aires. Again, no one said any of this had to make sense or follow any semblence of logic.