Reviving the Dart Lite for daily driving...how should I spend the $$$?

I'd say fix the carb problem, whatever that takes. MAYBE go to a super six setup. I'm not familiar with it, is it progressive? If so it would be good for mileage. I wonder about the future plan to use the OD trans with your current 2.94 gears. Result would be about 2.15. Curious as to how the slant would pull that on the highway. Would be interesting to see what kind of mileage numbers you could get. In town would be about the same as having the 3 speed you have now, just with an OD for the road.