Hi, every body I just had a question for you. I have a 96 ej25d with hla heads. It has rod knock so was wondering what headgasket i could use if i used an ej251 or ej253 shortblock. I know there are other posg similar to this but i could not find a definitive answer for the hla heads since the heads have a slighlty higher cc than the 97-99 heads. Thanks in advance.

Thinnest one you can get. 770 or 642 will be fine. 

GD

Sorry im not to familiar to much with subarus is that the last numbers for the part number. Thank you

yes

Thank you very much