A good point to start would be to take an Alfa 156 V6 engine finish as the standard to go for?
Or take a look at the detailing on a modern Triumph Bonneville - they have even made the injectors look like carburettors, in an effort to keep the "traditional" style of the bike

Bud

__________
2003 - 4/4


Bud
4/4 "Stanley"