Would it be possible to replace the headlights/tail lights of a 2004/5 VW Polo http://www.wrightdrive.com/MP/VW%20Polo%20-%20Silver%20-%20Jan%2007%20002.jpg and fit the 2006 onwards headlights? http://www.caradisiac.com/media/images/le_mag/mag228/vw_polo_03_big.jpg The only reason I ask is...