The 72 2.0 must be an engine swap. Will not be the original engine, since the 4 cyl. 2.0 didn't come out till 1973 I believe. That being said, you will get two 2.0 motors. But unless it's almost a give away, you're looking at spending alot of money. Unless the 72 is a 2.0 liter six. Then go for it.