A 90 Dakota had a 4 banger and a V6. The V6 was essentially a 318 with two cylinders lopped off.

If you had the V6 those mounts will work on an LA, you will likely need to put spacers in the driver's side mount to get the bracket to line up with the ears on the 360 block. Obviously you will need to verify and adjust the fore and aft placement.

Not sure about the 4 banger setup.