There is a new fan out there, I believe it's by Be-Cool. The motor part of the fan is raised up or offset to make the fan thinner for tight space constraints. In most "A's" that I've looked at, the engines are set back quite a bit. I can't give you any help here due to the fact my car's blown which needs lots of setback room. These A Bones are really small cars! I don't know which fan you are thinking of using, but I would us a 16". Make the room for the fan. You don't want to be stuck with to small a fan. You want to keep her cool! Get all you parts and mock it up. The other option, you could run a 32 Grill Shell and use a pusher fan in front of the radiator. Good luck.