69 Dart Rear onto a 73 Dart

Well i know this isnt the Brightest idea but. To find a Unmolested 2 door 68, 69 dart seems like a Challenge now. And when i am ever ready to buy one it will be even harder. So i thought maybe if i got a junk 4 door 69 dart and cut the back half on and Weld it to a 74 Dart it might be doable.

Unconventionaly idea, Yes. But i thought people have done way crazier stuff.