running a gt35r on an EJ20 is a bad idea, you would need a fully built bottom end and worked heads to flow enough air and you still would prob have a dyno queen. Gt30r would be 10x better but still asking for a built bottom end and custom angled turbo setup for the size of the inlet and the turbine flange. Not to mention an external wg.
__________________
02 WRX
K&N, ic hoses, up-pipe & turboback