Review on ARP 247-4202 Stud Kit: Boost Performance and Reliability by Chase Arellano

Instructions for use are included with the studs. I would suggest going to Glacier Diesel for a more detailed step by step guide (PDF available). As for the cleats; everything works as it should and lasts better! I've always hesitated with stronger tunes on my programmer. These stilettos gave me peace of mind. The head stays where it should be and my coolant level is fine. It took me almost all day to install. In short, I recommend them to anyone looking for extra insurance when putting more power on the 6.7.