agree with cmng..
parts for sr20 is easier to get in market.. but remember SR engine using timing chain not timing belt.just taking care a bit to change ur engine oil regularly. for me i'll change it every 3500km-4500km..just using mineral base oil..
water pump cost me aroung rm180 only.. just bring the sample from ur car.. as state at box mine one similar c24 & u13 / u12