If you communicated with them and they say they are out of production, I'm sure they don't.
I would assume you did the rear control arms as well then, as they make a difference overall.
You can also use a 760/960 24mm front sway bar. But the king's springs are not very stiff and the Bilstien hd/b6s are not very stiff either so you will have roll.
The best results I had with flatter cornering is getting rid of the king springs and Bilstiens. But I also expect the car to have roll because it weighs 1600kgs with me in it. It's not an mx5. It still grips, just leans a bit like every one of my street cars.
https://www.classicswede.org/shop/40mm-lowering-spring-set-volvo-740-760-and-940-petrol-engines
https://www.classicswede.org/shop/740-760-940-960-series/suspension-700-900-series/springs-dampers-coilovers/dampers-shocks-7-900-series