ARP 235-4716 Head Stud Kit for Chevrolet Big Block MKIV w/Merlin heads. 8 long exhaust studs. undercut. 12pt ymm_82 and the ECE certificate is

and the ECE certificate is valid only for these cars

An optional Evolution link pipe is available to further expand exhaust tuning possibilities and enhance the performance potential of the Akrapovic Slip-On Race Line (Titanium) system

They are combined with steel wheel nuts machined from billet and copper-plated to optimise screwing onto the studs even at the high temperatures resulting from prolonged use of the brakes in racing

This is especially the case after removing the point-welded block in the link pipe that prevents bypassing the muffler

Del Sol 1996-1997

ARP 235-4716 Head Stud Kit for Chevrolet Big Block MKIV w/Merlin heads. 8 long exhaust studs. undercut. 12pt ymm_82 and the ECE certificate isSpecifications Socket Size(s) 1 2 12pt, 3 16 Allen