I think it will be fine. I hear that going the other way, 2.0 to 2.3, you have to shim the motor mount about a half inch. I don't know how that will affect you doing the reverse.
05 D20 ZX3:
F2 CAI, Trubendz 2.5 exhaust, Tom's Tune, Eibach Sportlines, black SVT wheels