This motor is really NOT that good of a deal. You're looking at $1,500 for the swap, plus $4,500 for labor plus mounts, axles, wiring, ECU, etc. You're probably looking at around 7-8k before this is all done, and that's just insane when you realize that motor makes LESS horsepower than your GS-R already does.
Not all K-series motors are created equal. The 02-05 Si/RSX base motor and all the Accord/Element/CR-V motors have a dumbed-down version of the i-VTEC, and they don't make nearly as much horsepower as say the RSX S, TSX, etc. You can swap a better head onto it to make more power, but that's even more money on top of everything else.
You could have a helluva fast B18C or H22 for that much money...this is totally not worth it in my opinion...