Hello Bruce I am the author of a diesel engine textbook in Australia, I would like to change the front cover of the book and I would like you to quote on an illustration job for me please. Attached is a photo of a set of timing gears as per what's in the front of a diesel engine. Can you give me a quote to draw up an illustration for the gears and symbols. I though the colouring for the suspension arm and disc brake on you web site was excellent. Approx what sort of money and how long to do it. Thanks Barry Keywords: Mechanical