Does anyone have an authoritative reference for the FIA homologation specifics of the 504 sedan? The lists I got are vague and incomplete. For example, they list pre-1970 initial dates (1968, I think) for the 504 carb and injection versions and a two liter engine but I thought the engines were 1800 at that time. I have also seen competition 504's listed as 1969 but with the XN2 engine modified with DCOE carbs. Our target is to qualify a 504 for vintage racing as a pre-1970 homologated car and any help on how this can be accomplished will be greately appreciated.

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Thanos