1989 HO 302 Info Please
HOs have E7TE heads, forged pistons, intake opening on passenger side, roller cams with 351 firing order. I am pretty sure the T-bird and Mark VIIs had lower intakes for hood clearance so a few hp less than stangs.
Marquis and other boats still had roller cams but used a different firing order, E6SE heads, flattop cast pistons and different intakes(the intake enters on drivers side.) These blocks are identical making them cheap roller cam rebuilders.