The boys at Moore HP walk you through the process of using our  Head Bolt Drill Fixture for Gen 3 & 4 GM LS-Series Blocks to upgrade their Dart block with 1/2" head studs! Our 1/2" head stud kits for Gen3 & Gen4 LS engines provides an increase in clamping force capability perfect for high horsepower engine builds! While you can take your block to the machine shop and get the process done that way it will cost you! Save some money by doing the process yourself! In addition to saving some money for more speed parts our Head Bolt Drill Fixture kit is reusable so you can upgrade multiply blocks!