Searchn around, and found some stuff quite interesting at Wikipedia.
Firstly, for anyone interested in what the new GR series 3.5L V6 is all about
:
http://en.wikipedia.org/wiki/Toyota_GR_engine
Note that the GR series engines will be going back to the Cast Iron/Alloy Head combo as used in the VZ series...

(must tell you something eh?!!!)
And secondly this:
http://en.wikipedia.org/wiki/Toyota_VZ_engine
Which in particular, i found interesting these quotes:
Quote:
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the 2vz-fe is the easiest of the Toyota v6's to turbocharge, owing from the rear bank's exhaust manifold pipe crossing over to the front bank. Making normally complex turbocharger mounting & piping a simple case of mounting the turbo onto the front bank.
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Whats the deal?? They talk about that as if it's been done before
Quote:
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The low angle DOHC cylinder heads were designed & mostly built by Yamaha, or by Toyota under license
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I didn't know Toyota V6 heads where designed by Yamaha. I knew that the 3SGE ones were...
Quote:
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In an embarrassing move, Toyota inadvertently created an engine competing with the more performance oriented 7m-ge, 1jz-ge & 2jz-ge's installed in sportier, more luxurious cars of the time. Because of this, both stock ignition timing, and fuel tuning were set more conservatively than normal(even for Toyota!) capping power output.
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So how much power STOCK does a 3VZ put out with tuning? This says to me, that if you pop on an aftermarket ECU and tune it, your going to get some good numbers out of a stock VZ engine!
Anyways...an interesting read.