It'll most likely be the 4.4l V8 that's going into the Bonneville GXP (which in itself is based on the Aurora's 4.0l V8, which was a version of the Shortstar 3.5l V6 with two more cylinders, which was a version of the Northstar V8 (4.6l?) with two less cylinders. You'd think GM would have just made a smaller Northstar and called it that.)