Do you suppose Franky...

[Ladywriter]

incorporated any of the ancient weapons designs into Sunny? I would have to guess that he had some if not all of Plutons design memorized.

[Godgrave]

Maybe, I was just flipping through the manga post Enies where the anime's at right now ... are there any hints through the manga though? I'll know once I read it well.

[Ladywriter]

he says something about leavin a spot open to add another weapon later.
hmmm....

[Sledgstone]

I don't think he used any of the ancient weapons schematics. I think he made Sunny straight from his own imagination and designs. its his dream ship after all. ^_^ ok, maybe he got a hint here and there from the ancient weapon's blueprints, but I don't think he used anything specific. I am interested in what that weapon will be tho. I bet it will be SUPER~!