I thought there was somebody a while back posting a wanted ad for a 91 Dakota 318 oil pan because it was one year only, but not 100% sure about that.
The block itself will have normal LA engine mount location lugs, and the rest of the 318 engine will be typical of an LA version with roller lifters, so nothing wrong with that. The front accessory drive is a serpentine setup that I have only seen one time and it has a different aluminum bracket for alternator and air conditioning compressor mounting. I posted some pictures in the thread below.
Crosswind air gap clone and ram truck serpentine setup
