400/426 Stroker. Ever heard of one?

So what was the original reasoning behind offset grinding a factory crank? Do you have a buddy with a crank grinder? Offset grinding used to be the only way to build Mopar strokers but we stopped doing it roughly 20 years ago because it was more expensive than just buying a new crank. There used to be local guys with crank grinders who knew how to grind cranks to spec as well as do things like offset grinding, but they are all gone now. I haven't seen an offset ground crank in years and we wouldn't even bother to quote a job on one these days.
The offset grind was about $300. The new cranks I found were near $1200. I also had the steel crank sitting on the shelf from a ‘68 383 that I ended up selling. Plus, like RAMM mentioned, I wanted to do something different by targeting big(ish) cubes with a small block feel. I regretted stroking my old 340 and missed the rev happy nature of the shorter stroke.