is it a USDM engine?
the only USDM 2JZ's came out of other Supras, and should have "Toyota 3000" on the cam cover, while the 2JZ's (non-VVTi) out of GS and SC300's have a Lexus symbol on them.
If the engine is JDM, then it's out of either an Aristo (GS300) or another Supra, in which case, I...