[MetroMPG]

Don't worry - budget builds are popular around here!

Before you get too far, if you haven't already, you might want to check in with the aero subforum to get advice on the optimal shape at the back of the car behind the B-pillars.

I'm sure you know that if you taper it too abruptly or make the curve/angles too steep, you'll end up with higher drag & lower fuel economy than is otherwise possible.

Looking forward to the next update!