1Z 1996-early 1997 engines all had the Garrett GT15 turbo. The AHU got the KKK-K03. The K03s tend to last a bit longer than the Garretts--so if you have a 1Z with a K03 it has been changed before. I actually have hybrid turbos available, as well as a just released (yesterday) option which is very close to the Kerma VNT20 kit fit into a wastegated turbo for the A3/B4 crowd. It's not for the faint of heart!