SMP-MODPACK/.minecraft/resourcepacks/assets/minecraft/models/block/red_sandstone_stairs3.json

{
    "__comment": "JimStoneCraft - 2020",
    "parent": "minecraft:block/stairs",
    "textures": {
        "bottom": "minecraft:block/red_sandstone_bottom3",
        "top": "minecraft:block/red_sandstone_top3",
        "side": "minecraft:block/red_sandstone3"
    }
}