Need recommendation for a Carb for better MPG!

Valveguy said
About 18 years ago, I see that I took out the 323s and put in 294s. Would it be worth going down to a 276? I guess I would have a 294 and 323 to trade/sell. In the meantime, I'm going to work on getting the 340 tuned. You guys are wonderful!

Did you notice much of a mpg difference between the 3.23 vs 2.94 swap ?
The 2.76 is a even smaller ratio drop.