Looking at that hub and caliper, I would fab up a "flat" bracket that uses 4 bolts. 2 through the original holes, 2 through the toyota brackets.

If I can do this:







Then you can put those 'yota brakes on your gen 1 Dakota.

but, if I was going to mount custom brakes, I would also increase rotor size at the same time, which means bigger wheels. not as much to be gained by using stock rotors, but 4-pot calipers always look WAY cooler than floating single piston! just be sure to pay attention to the piston sizes of the toyota caliper in relation to the size of the original dakota caliper, and be sure it still lines up with what your master cylinder can support