1. as said before i am new to modding so what info do you need
2. diamond dimensions (nostalgia reasons) Optifine, The Lion King, Battle Pets, Grimoire of Gaia 2, TreeCapitator, Dr. Crayfish's Furniture, Damage Indicators, Battle Towers, Bibliocraft, BuildCraft, Cake Is A Lie, Dimensional Doors, Dungeon Pack, Enchanting Plus, Eternal Frost, Extrabiomes XL, Familiars + All packs, Farlanders, Galacticraft, Golem World, Lucky Block, Minecraft Comes Alive, Mo Chickens, More Cows, Nether Ores, Nether X, Not Enough Items, Oceancraft, Ore Spiders, Roguelike Dungeons, Ruins, Sync/Piggy Treadmills, The Camping Mod,The Twilight Forest, Underground Biomes, Zan's Minimap.
3. some mods dont have higher than 1.6.4