You will have to ask at your local paint supplier .

I used a brushing grade paint (on my bus) from our local Resene Paints, called Uracryl 400 series, it is 2 pac, very durable.

http://www.resene.co.nz/archspec/datasheets/ra55-Uracryl-402-Semi-Gloss.pdf

There must be something you can get locally that will perform the same.