You can ping me directly: dginther@gmail.com or ask questions in the forums.. I'm not on this forum that much. It's totally possible to build a *budget* turbo 22RE motor if you're willing to use Hypereutectic or cast piston.. The forged pistons are expensive at about $600/set.
Manifolds can be had (exhaust) for $250-$500 that fit a garrett turbo.
Budget turbo, $250 or less.
New turbo, $500-$1000.

The *key* to building a turbo motor that most ebay idiots selling their 22re turbo "kit" don't get is that the stock ECU is totally unsuitable for a turbo application. If you want to bandaid it, use a rising fuel pressure regulator, or hobbs switch (pressure switch) fired alternate injector.
The *right* way to do it is to use aftermarket EFI, which sounds scary, but megasquirt can almost drop into the existing ECU location... Cost $200 (build it yourself) - $400 (assembled).

Note, swaps should be considered, especially with later model toyotas as you can adapt the drivetrain.
2rz
3rz
4.3L chevy are all reasonable swaps. The first one is relatively inexpensive and provides about 170hp. My understanding is 5 wires are needed with the ECU on the 2rz.
They require more fabrication than a turbo, but are easier in other areas.

In regard to your emissions test, if you're not tested on a dyno - just idle and fast idle, emissions should be very near the same.


22re's are available everywhere.. check www.car-parts.com.
I wouldn't pay more than $250 for a well used 22re that is complete.

As noted above, you do *NOT* need a turbo block.. The only difference is pre-drilled oil and return passages. A 22RE can be setup the same way in less than an hour.