It's a popular month for Excaliburs. JasonRocZ has updated Steele's our XWA mod ship for WC Collateral Damage. So far he's reworked the gun mechanism to include some motor equipment and circuitry. This is supposed to reflect the autotracking guns from WC3. He's looking at Chain Ion Cannons for the centerline guns and also testing out several different color schemes.
I have modified the existing Excalibur model that was originally done by Micheal "Steele" Boewes. I believe it is an excellent model. I showed this model a few months back, but unmodified as part of some screenshots. Here's an updated version with a slightly different look.