BB 440 Mileage?

I am curious about something. We are finishing off a 440 Dart Sport. Smogger 440, ported heads, 223-230 cam, factory HS convertor and 4.10's. I attempted to build the car pretty well. The engine is very mild for the build however. It was my intention to build a more radical engine once the car was running and bugs worked out.

I know the gears are too deep, I will likely change those once I get it going and drive it a bit.

What I am wondering is what other BB A bodies pull down for mileage. Please spare me the "It's a 440, what do you expect..." comments. I have heard those with my 4x4 background for years. I tend to drive/build efficient 4x4's when I can even with big tires.

Life has changed so much since I started the car that I now want to DD it some during the summer etc. And I live a long ways from anywhere so mileage does matter to some degree.....

What are you getting for MPG? I am hoping with some decent gears to get somewhere in the lower teens....