This depends on what you want to do with it- if you just want a bit more power in a daily driver, and not a track monster, the 2gnt could work. If you have a welder, decent fabrication skills, and some free time, you could rig up a low-pressure junkyard turbo kit on pretty much anything inexpensively. You should probably shell out on the manifold instead of trying to diy, and you usually have to run an external wastegate to keep the boost low enough. I'm no 2gnt expert, but 5 psi non-intercooled with a 1g bov on custom piping, one of of those crappy 8:1 fmu's, and that 14b modified for use with an external would probably be what he's looking for, right? The biggest expenses would be the wastegate and the manifold- they have manifolds flanged for mitsu turbos, right?

So far the best advice in this thread was to do your research at 2gnt- this is mostly a 4g63 forum. Just from what I know about typical nt-t projects, though, I would only do it if you can do it yourself and do it on the cheap. When the engine is the limiting factor, throwing a big expensive turbo kit at it is not going to give you a good bang:buck ratio.