How about some good resource of different engines so some of us can have an idea of what is original collor of the engine or for some of those who are very good at building from scratch? There you go:
Mugen Formula 3
Mugen Formula 4 B18C
Toda B18C
TODA FERRARI MODENA F360GT Engine
TODA NISSAN SR20 N2 Race Spec
TODA NISSAN SR20DET GT300 Engine
TODA MIATA BP 1.9 Liter Engine
TODA TOYOTA Altezza 3SG Engine
TODA TOYOTA 4AG Engine
TODA HONDA NSX GT300 Engine
Ferrari F1 V10
Bugatti EB118 W18
Porsche TAG Turbo V6 F1 engine