Not sure which bolts you need, but could look into this kit. https://alloyboltz.com/product/88-up-suzuki-lt500r-quadzilla-polished-stainless-atv-bolt-kit/

I have used a couple of there kits. They are great for plastic, some side cover, and low stress applications. Not so great for a-arm or shock mounts. Just need to use anti-seize as SS bolt and SS nuts don't like each.