Got ripped off. Looking for a new idea for the inside of the engine. Stroker maybe?

Just my experience, but I had a Doug Dutra built Slanty with big valve heads etc. Ran it for years. It was impressive for a slant. One day I was just tired of it, sold the motor and trans and swapped in a tired junkyard 5.9 Magnum with EFI and a 727. I drove that for a year or so, then built a 408 stroker for it and hooked it up to a 4 speed overdrive automatic with lock-up converter.

Both the 5.9 and the 408 get better mileage than the slat did, have WAY more performance and pretty much bolted right in. I'd never go back to a slant no matter what kind of unlimited budget build the slant 6 was.