Just head to your local harbor freight and buy a sway control from them. Very low cost ($29.00...and you can use a 20% Hf coupon if you google it) and works just as well. They will have the ball mount and screws you will need.
I have a ProSeries sway bar and a Haul Master (Harbor freight) Sway Bar and other than the label I can’t tell the difference.
Plus, an extra sway bar is not a bad thing to keep in the spare parts bin in the trailer.
On edit, I misread your OP. Yes the Curt will work fine. I have mixed and matched parts. I really suspect that these things are all made in the same factory. I have had ProSeries, Husky, and now HaulMaster and I can’t tell a stitch difference except for the stickers.
Thanks!
Jeremiah