Thanks, I absolutely love my Dart! It's a 225, but it feels more similar to a 273. Not blazing, but a good foundation for sure.
Do you have an AFR gauge of any sort? I'd be cautious of running that thing lean, especially under load. Fuel Injection would do absolute wonders, that would be about the only way you could get me to go turbo, plus with blow through, you can intercool it.
I like the draw thru setup, I can only imagine it would be much easier to tune!
What kind of fuel economy are you getting? Or do you even worry about it lol