Upgrading Headlight Bulbs.
 

Hi, can anyone tell me what type of headlight bulb is fitted to a 2003 WRX ( Non Bug eye ).
Keep seeing various types from H1 to H4 but am not certain what is fitted as standard.
Was going to change the bulbs for the Xenon type, anyone recommend these.
Any opinions welcome.

Cheer's :thumb: .

Mark.