Originally Posted by TrueGS300

If you decide to do the timing belt, I'd recommend as stated already to do the complete timing belt kit that includes the tensioner and pulley. And probably the water pump if it's never been done as it bolts to the block behind the timing belt. Some of the most common heavy leaks on the 2JZ-GE VVTi engine are the cam seals and the VVT sprocket seal. Your shop will not be able to locate the seal for the sprocket, but you can order it on eBay and provide the shop with it. Watch a couple videos on YouTube so you can explain it to them. Of course, if your engine doesn't seem to be leaking, might not worry about it. However, now would be the time to replace the 2 cam seals, 1 crank seal, and 1 VVT sprocket, or just the seal inside. I opted for a new VVT sprocket after attempting the seal repair twice and getting codes after. I also found my harmonic damper to be near failure when I did mine and not having it on hand made it double the price having to get it the same day. If you can inspect it with a flashlight and telescoping mirror, look for the rubber elastomer to be protruding, or coming out between the inner and outer shell or for crack or oil contamination. Also look at it while the engine runs for any wobbling. It would be another good thing to provide for the job if it's bad and would save some big money instead of them buying it at top dollar and passing the markup on to you. A failed damper has wiped out two engines in past cars of mine.
Some other tips to look for to verify the need for seals: A common area to see oil build up is the top water pump/alternator area. If it's wet with oil there, it is from the cam seals. That's where it find's it's way out from the front cover. If it's just leaking out of the bottom of the front cover, it is the crank seal. And if you pull the top timing cover to have a look inside, it is common to have oil slung all over in there and up on the underside of the cover. If that's the case it's the VVT sprocket seal. Anyways, I don't know if any of that helps. I figured by your first post that you were doing the work yourself, but I suppose you had them do the other maintenance you mentioned too? It's still good stuff to research and look at before taking it in. You could get calls for more and more money as the job is done. Also you can have the job done and leave thinking the car is good for the foreseeable future only to have some major issues come up if just the belt is replaced. You can save a lot of money by ordering quality parts online and having them on hand if any of these things are needed. I and others on here are also able to give you reputable sources and brands for parts you should or should not use.
Consider this: You will pay more for a low quality timing/WP from a shop (probably Autozone's Duralast brand) (which really really sucks) at their markup price than you will for an actual good brand like Aisin if you buy it yourself and provide it. Same goes with everything else.