When you absolutely, positively gosts to kill every mother-lovin tank on the board...accept no substitutes.
This is the Shadowsword variant titan killer. I messed around with the main hull a bit and managed to make it and the primary weapon removable. I can replace the turbo-laser with the vulcan mega-bolter, and also move up the main hull to expose the troop compartment behind. Pretty easy due to the excellent fit of the kit.