Custom Age 625+ head studs are the best head stud available for the 2JZ-GTE and 2JZ-GE. CA625 studs are centerless ground, heat treated and nominally rated to 270,000psi.
The Supra Pro-Series ARP Head Stud Kit Includes:
14 CA625+ Head Studs
14 12point Nuts (8740 Chrome Moly Steel)
ARP assembly lubricant
ARP recommends torquing the CA625 2JZGTE Supra head studs to 100ft/lbs in 3 steps in sequence with lube. Instructions available online.