That looks like a good match to the original colour Ted. Did he take the engine apart to paint it and did he oven cure it?
The engine was out but painted assembled with some masking etc as it was in good condition.
The paint is for "Drive Train Parts " - they advise either oven bake or paint & leave to dry for I think it was two months for standard air cure - so my BiL says. Will fully cure with engine heat as well.
In the flesh it looks really better than the photos hiding any surface imperfections due to its semi-matt finish. Very hard to describe but looks brilliant. He painted the frame with the same type of paint but in silver.