I asked my buddy to chime in. I think he went with a Houser combo foot rest/ heel guard setup. Not sure if it’s still available. There is a combo nerf bar with pegs on eBay but it’s pricey but looks nice and very stout.
Other than that, I would check eBay for part outs. Or see if you can weld it cleanly if possible so that it’s safe. Looks like the stock pegs are no longer available to order. You could also get the part number and contact your local KTM shop and see if there are any other KTM dealers that may have one in stock.