The g20 is very nice lots of upgrades for it too being it has the sr20. I wouldnt even look for g20 parts. Just look for sr20 parts. They all say fro 200sxser/g20 same stuff. sr20deforums has a lot of stuff for the sr20 motor. You can make tat car a beast just take your time and research what you want out of it.
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200sx (Intake, Full Cat-Exhaust, 15 deg timing, 17" G-Racing Seki's wrapped in dunlop fm901's, Dropzone springs. Soon to be turboed)