my friend and I pulled what we belive to be A6 pistons out of a junk motor. they are marked with P28. we weren't sure if these were the pistons from the A6 or not. just trying to avoid lowering my compression rather than raising it...

 

Those are the pistons out of a D16Z6 (92-95 Civic/ Del Sol Si & 93-95 Civic EX)

HTH.

 

crap, just what i didn't want to hear. thanks for the info though