You generally use of the the existing bolt holes and just get longer bolts of that size to fit through the sliders. You certainly don't want to be drilling the frame for a new bolt.
The Kat is pretty much wrapped 100% with no natural holes for the sliders to fit through so you're likely also looking at cutting a hole into your fairings to fit the slider. And this lack of natural openings to fit a slider is likely why there's not many options.
But this havnig to bodge in a set from some other bike means that you need someone with a fair degree of knowledge about slider bolts and bolt sizes. That says "shop" to me. Or at least some time to pull your fairings, find the bolt. pull it out and measure it up and then go shopping armed with some specs on what you need.