383 for 1967 A Body Dart

You guys have been great; thank you!
As a matter of fact, this post generated a PM to me about a 440 block that came out of a 69 Barracuda.
It got me to thinking about the 383 and what you all have mentioned.
If this 440 block is ready to slip in my 67 Dart with no machining and or aftermarket mounts or parts, I might just step up to the RB instead of the 383.