Load the stuff up and take it to a reputable machine shop. By the pictures, the crank doesn’t really look that bad to me. Most of the stroker cranks I’ve installed have had the bearing clearances way on the tight side. I’m betting that’s what has happened here. Heck, you might just be able to inspect the crank for cracks and excessive wear and if all checks ok, and give it a polish and install new bearings that provide proper clearance and go.