Well, as I have done with the Star Wars ships, I have built a block model of the Starfury and it weighs in at 14.2 dTons. Using Far Trader's custom rules (see the Star Wars meets Traveller thread in the Lone Star) it should be a simple matter to run up some stats for it.
If you can give me a day or so, I should be able to get dTon volumes for an Omega Destroyer and B5 itself.
Crow