Just thought I would remind you all who have 2.3 engines, I just pulled my head and intake off to fix valve guide seals and I discovered that the last owner of this engine put a D-port gasket on an oval port head sometime in its past, no wonder it never seemed to run like I thought it should. I ended up buying a D-port head because the price was right and it is rebuilt but it has been milled up near to the intake bolt holes. Any idea of about the compression ratio it will have, its a 85 heart shaped head. I could not find a D-port stock carb intake so I ported out the intake ports to the oval port size. It came out nice. I think this head was intended for a pony stock car.