'71 Duster 440 or 360? Pros and cons

Big block's in a bodies don't sound that great, they are light cars, more bang for the buck if you plan anything accept drag races.

If you do the small block, then you can take advantage of everything these cars are capable of, they can handle very well.

So when your done waiting 2 hours for 11 seconds of straight ahead glory, you can take it to a road course and have some fun. :)