273 2bbl turn into Commando or is 318 better?

Three years ago I bought a 63 Dart with a 65 273. My first thought was to throw out the motor and try to find a 340. But then I got hold of a gem, an Eddy D4B intake. It made me completely change track, now I have built a 273 Chager +. The differences between me and the original 273 Chager are:
- Eddy D4D dual plane intake .
- Eddy 600 cfm carb
- Electronic ignition
- Headers
- Shaper cam.
If I'd like to save money, I'd gone for a 318, but now I have something that nobody else in Sweden has. It makes me thoroughly satisfied.