Braced swing arm OR modern swaps for a CB500/550?

Been reading and searching and there's really not a ton of information out there. I'm looking into bracing the stock swing arm or swapping it out for something more modern....lighter, stiffer, etc.
I want to keep the dual shocks. I get that most newer arms will be wider, but I plan on running Lester's and the rim width is not changeable. So....super wide arms and fat rear tires mean nothing to me.

What are the options for a somewhat easily adaptable swing arm for a CB500/550? Who's braced a stock arm? Any thoughts or info are appreciated.

How about something from a CB1 400, or a Nineties CB Seven Fifty?

Bit of a delayed reply but MotoGP Werx out of California is building new Calfab swing arms for the 550 and other bikes. He bought all the rights and stuff.

I bought the cb550 version for my 650.