Distribution block question.

Okay, I have drum brakes on my 73 dart swinger. I bought a parts car with disc brakes, it is a 74 dart custom. The rear will still be drum bakes, just the front will be disc. I was wondering if the distribution block is the same in both cars as the look the same. Im having troubles getting the block out of the parts car and that is the main reason im asking, because it would be alot simplier to just use the one already in my car if its the same.
Thanks in advance.