it'll cost more than $1800 especially if you want all brand new parts.

Turbo= $600+
Manifold=$600+ (not sure on RSX manifolds)
Intercooler=$500+
Piping= $400+
BOV=$250+
Wastegate=$400+
Injectors=$300+
Tuning=$150 /hour

thats over $1800 already....plus all the little fabrication fees and msic stuff you will need.

Unless you can find a used kit and look hard its hard to get a good quality kit for $1800.