Cheap power Conversion
I came across a post somewhere, Some hot rod builder was due to rebuild is ride but he was a little strapped being as he'd just gone professional and outfitted his shop. He took his old 351 he'd been using for a while and he converted it to E85, He was already running pistons that gave him a compression ratio of 10.1 but he was buying lots of octane enhancer. All he did was drill out his carb jets and re-time he was done. He lived in Minnesota so he could change to pump gas, get 10hp every digit of compression over standard and return a good MPG. Lucky stiff.