Best year to pull 360 from?

I'm new to this and was hoping someone could help me out. I might be picking up a 71 Duster this weekend to start my project. It has no motor or trans so I will need to locate one.

I was wondering if there is a better generation to pull a 360 from? There are a couple 360's from early 90 Dodge vans on craigslist and also a AMC 360 that was in a 83 Jeep. Is it best to try and get a motor from a car as close to a 71 as possible?