Personally, I'd just like to see someone do a "street-strip" or mild bracket 352/360 on the cheap. I have never actually seen or heard of the skinny rods breaking, just a lot of conjecture and paranoia. I thought Brent was going to do something with that 352, but it got wacky in a hurry and disappeared down a rabbit hole. There was somebody else here a few months ago that was going to do a 361 piston build, and that probably fizzled, too.
6200 is no big deal. I've run 390's and 428's with stock original bottom ends there and past with zero issues. I've run 289/302's beyond 8 grand with same lower ends. All cast pistons. Wes, if you are going to spend money to trick the crank and rods, and use a Cleve intake, up the cam and shoot for 7500 rpm.
Grassroots. Making more from less. No wonder I feel like a pariah. I just ain't hip no more.