If anyone out there is rebuilding a zc, the vw Golf ARP headstuds #204-4204 dont fit all zc engines,i know a few sites posted these were the right ones(they were too short ) ), but i guess theres some difference in some model years of the zc engine, the engine rebuilder called arp and gave the spec,s and for my engine it used 89 integra headstuds,if anyone needs vw headstuds i have a set for sale, hope this info saves someone from buying the wrong ones.