Hello Phill, what a lovely job you have made of the car, congratulations on a job well done.
I too love the engine bay detail, I have built a battery box to look like an engine for my single 12v battery, but I am thinking of going 24v, and the dummy engine bay is a super way of hiding the two batteries, that is definately on my "to copy" list, hope you don't mind.
Regards,
Brian.