5.7 HEMI Vs. 408 Stroker

A conservative 408 can get over 17mpg in an A body with a carb and 3sp. An EFi version would go past 20 easy, again, 3.23s and 3sp auto. Add an OD stick, and it goes better. I dont think 22-23mpg on low octane unleaded is easy doable. If you were going with AlterKation of suspension to make it handle well, then I'd go new Hemi. Otherwise, go 4" stroke. My .02...