Pretty sure that you will find that your F8-DOHC head will have the FE3 markings as well, as far as I know, they are the same head. FE3 is just what the head casting is, the 2 litre is called the FE-DOHC. I can't swear it, but I am pretty sure the replacement head I put on my capella 2.0 came from an 1.8 at pick-a-part. The cams would fit directly, what numbers on the current camshafts? The 1.8 tended to have smaller cam profiles to help with the low end torque.
1991 MX6 Turbo 4WS back on the road again after 5 years.
1990 4WD Capella Wagon2.0 FE3 now tin cans.
1988 4WD Capella Hatch 2.0 FE3 DD