I'm slowly working on turboing a rig or two. I can tell you there's no "bolt on" solution, no 'start to finish' writeup (sean & bentparts come the closest), and doing anything 1/2 a$$ed with a turbo is practically guaranteeing a blown engine. The fuel management, spark & header are the hard parts. T4 is WAY too big, and T3 might be too big (there's DOZENS of configurations) creating crazy turbo lag. Expect to easily pay $1,500 all said and done:
* Turbo
* Intercooler
* 100% new exhaust (Custom-built manifold, piping, cat, muffler)
* Fuel management (pumps, injectors, variable fuel delivery / pressure)
* Spark (ECU re-maping or programable ECU, wideband O2)
* Test & monitoring equipment (wideband reader, Dyno tuning)
* Intake piping
Let's not forget you'll have to run hi-octane fuel for the rest of the vehicles life...
Sean Devinny & Aftermarket4x4 did a good wrietup, and may be able to help you with the exhaust manifold.