This is an 8v DOHC injected engine, just as in your Sierra.

If I'm not mistaken the 8v DOHC engine in the 1994-1998 Scorpio had a bit lower compression (9.8:1) and a bit less power (115 hp) compared to the earlier one (10:1 compression and 120 hp). But I believe the difference is in the pistons and not the head. But from the outside it's very difficult to tell the difference between the early and late engine.