We upgraded our front studs to ARP's a while back. They're intended for a Lexus IS 300, but the threads match the 12x1.5mm Tacoma/FJ/4Runner. They're much longer than the too-short OEM Toyota studs, and they're stronger to boot. These studs are available from Summit Racing. This was the perfect time to upgrade the rear studs to match the front. At press time, Summit's part number is ARP-100-7715. They come in packs of five, so you'll need to order an extra pack for your six-lug Tacoma/FJ/4Runner.