BMX Brakes

Another couple of stupid brake questions, in what is possibly to be a long line of stupid brake questions…

Will BMX brakes fit on to a road bike fork? Are the reach of the calipers generally about the same?

Will the rear brake caliper fit on the front fork?

BMX brakes are a good solution for 700c wheels in 27" frames, as the poxycheap ones have slightly longer reach/adjustment than poxy road ones. Front and rear usually have similar length bolts, so swap them with pleasure