The reason I pointed that out is so that you would know it's not going to bolt up - so you're looking at a custom installation - building a header/manifold, finding your own intercooler and mounting it, doing your own plumbing, perhaps an aftermarket ECU (with direct fire ignition), etc.
A good guy to talk to would be Jess over at
TurbineTech, I don't think he's done a 2.0 Tracker/GV but I know he had a 1.6 Tracker and he's currently offering a kit for the SX4 which is essentially the same J20A engine.
Hope you've got deep pockets though - there are only two ways to go turbo - pay someone who has the experience, or, do it yourself, which translates to you pay to get the experience yourself.
Edit #1 - it was a Sidekick not a Tracker -
here's his build thread over at Pirate 4x4.
Edir #2 - if you read that thread pay attention to comments from a guy called Baldur - he also runs (ran?) a turbocharged 1.6 Vitara JLX - essentially the same vehicle as the SideKick but on the other side of the pond (Iceland in this case)