Hello intend a new construction with a soft tail frame and an Evo engine. Since the Evo engine does not meet today’s exhaust emission standards an old frame must be installed. Up to which year of construction of the frame can an Evo be registered or installed without problems (emission assessment)? So which standard does it correspond to: ECE-R40 Euro-1 Euro-2 Euro-3 Hope my research up to here were really nice greeting and many thanks in advance Jimbob