I see 19bonestock88 specualtes it's the 4G54.
I was going by the overall layout and the cover for the timing belt. I once knew someone with a Doge Rampage. It had a 2-liter engine that was licensed from Volkswagen Auto Group that was their 1600 block with the bore spacing increased to allow more displacement.
What I want to do with mine (down the road) is replace the alternator with a
Buick LaCrosse 20hp altermotor. This would eliminate the diesel's worst feature, the whole (pre-TDI) car shakes when it is idling at stop lights.