ARP Main Stud Kit - 12 Point Nuts - 2-Bolt Mains - Chromoly - Black Oxide - Without Windage Tray - Ford Modular 4051 They plug into the RS232

They plug into the RS232 computer harness and have two rotary dials for adjustments

product performance and durability

Pit Stop USA offers Rugged Complete Team - IMSA 4C Racing System with Rugged R1 Handheld Radios IMSA-R1 at low everyday prices

Plus worry-free no snag adhesion to any interior surface

ARP Main Stud Kit - 12 Point Nuts - 2-Bolt Mains - Chromoly - Black Oxide - Without Windage Tray - Ford Modular 4051 They plug into the RS232ARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, IMSA, NASCAR and NHRA drag racing and marine applications. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Main Stud Kit 12 Point Nuts