I am replacing the short block in my 96 (6/95) Outback 2.5 with a 97 or 98 short block. I am trying to figure out if I can swap my old heads on to the new shortblock. My concern is that the newer short block has the pistons with the square indentation in them, while the old one has the pistons with the "eye brow" indentations in them. Also, this 96 OB seems to have a rare engine configuration. One thing it has is a "narrow journal" crank in it that was only used in the 2.5 OB engines for a few months. The other thing is that the DOHC heads use hydraulic self adjusting bucket lifters. This too seems like it was only done for a few months. Any advice would be helpful and appreciated.