David Robinson's Venerable Dreadnought Conversions
Brother Maxum - Mortifactor Legion - Entombed 682.M32: I felt inspired to give the Dreadnought a more gothic and ancient feel. However, I did not want to use the standard plastic chassis. I figured that the Ghazkull Thrakka torso would provide a good base to work from, as all I had to do was cover the Orky icon with some plasticard or just file it off. I modified the shoulder guards of the Inquisitor range's Tyrus model so that each weapon would still fit in place and not look too awkward. The head from a Defiler (sans horns) gave it the ancient feel I was really looking for. I added some banners and purity seals from the Throne of Judgment to make the Dreadnought look like a veteran of hundreds of battles.
Brother Grandvil - War Bearers - Entombed 645.M40: I wanted to make only minor changes to this Dreadnought to represent a recently (1,000 years or so...) entombed Space Marine with mostly up-to-date weaponry. I started out with the torso and added the Throne of Judgment Engine to the rear. I wanted this Dreadnought to be a fan of getting stuck in where the combat was most intense. Thus, I swapped out the usual tiny power claw with a proper one from Ghazkull Thrakka to give it a slightly arcane and very choppy feel. The rest of the model was a matter of finding various banners and icons from the Inquisitor range along with the Space Marine Command Sprue to properly adorn it with badges of honour.

Armies of the Warhammer 40,000 Universe
Black Templars
Dark Angels Orks
Catachans
Dark Eldar Space Marines
Chapter Approved
Eldar Tau
Chaos Space Marines Imperial Guard Tyranids
Daemonhunters Necrons Witch Hunters