hi i have a blob eye wrx 2003 i need to buy head gaskets but which one do i need as it states ej 20 ,ej208 on my block it says ej20 and the thickness which one can any one shed some light as i dont want to get the wrong ones

 

Wrx is EJ205, STi is EJ207

It all depends if it's a standard rebuild or have the heads/block been skimmed as you will need to make up any difference to get the correct clearances

 

Standard replacement gaskets from Subaru are the thin MLS, Part Number 11044AA483

Mick