I run an RCR1260 on a B2650 to clear trails in the woods. Knocks everything down without issue. I’ve even hit some 2-3” trees by accident and it knocked them down - but I wouldn’t recommend making a habit of this.
Bought those same forks OP is asking about. I got mine on eBay with 20% off, arrived in 1 day.
If you can wait and have the money, wait and get the ones dirty deed is referencing.
Amazon has "aftermarket" ones. Doubt you'll find originals outside the collectors.
I'll PM you a link. I don't have enough posts on here to post a link.