Resurrecting Mom's Duster

@MomsDuster my engine combo is very similar to yours, was wondering if you'd bothered seeing what your MPG is? Yeah I know, big block mopar, who cares. I'm trying to decide on what size fuel cell to order to make sure I have at least a 250 mile range.
12 has been the best so far. I’m usually getting 8-10. But to be honest Ive never got the cruise AFR squared away with the Edelbrock.