Benelli SuperNova and Nova - interchangeable parts?

I picked up a SuperNova for a song couple of weeks ago, I love it. Now, the local gunshop has a Tactical Nova. My questions is, will the barrels and buttstocks be interchangeable? I want the regular stock on my hunting shotgun, and I want to put the pistol grip on the Tactical . . . or just switch barrels.

Anyone here know if these parts are interchangeable?
Found out through a little more digging . . .

Okay . . . Nova has a one-piece receiver and buttstock, while the SuperNova is modular. What about bbls?

Thanks,

Steve

I own a Super Nova Tactical 18"

 I have not personally looked for barrels but I have heard they are outrageous. 250-275.00 bucks or more.

Benelli Nova Barrel Only 12g 28" Black Matte Impact Guns
Price: $265.00

         Pretty steep for a 400-450 dollar shotgun IMO