74 to 70 Dart parts swap

We just bought the 1970 Dart with the slant 6 and manual drum brakes set up. I have an opportunity to purchase a 1974 4 door Dart with the 318 and power disc brake set up for less than what I'm finding disc brake conversions for($1000). Will this swap go as easy as I believe? I would like to take the 318, the transmission, the power disc brakes and the rear and put it in the 70. Am I over simplifying this whole process?

If I'm posting this in the wrong thread, I'm sorry. I'm still new to FABO and I could only find a general discussion for early A's.

Thank you all for your patience.