Aluminum blocks have a common issue no matter who the manufacturer is... damaged or "pulled" head bolt threads. Why replace the block when Time Sert has a kit to fix the threads making them stronger than original? Below are our most common kits that we sell. We also have more applications covered including BIG Sert kits that are oversize which accept the same size head bolts. Big Sert kits are used when a competing brand like Helicoil has failed making the hole bigger than normal. Call for assistance in getting the correct kit ordered for your situation at 800-734-8665 x251.