Since Epic has been OOP for ever, additional Space Marine vehicles will be difficult or very expensive (boo hiss) to acquire. Fortunately the technomagi on Mars saw fit to base most of their designs on the Rhino APC hull. This means I was able to cobble together some Razorback IFVs and Whirlwind artillery vehicles pretty easily yesterday!
I flattened the tops of the Razorbacks and drilled out a turret ring. Three BMP2 / BRM turrets later and voila! The Whirlwinds were some similarly, with SA9 Gaskin launchers added. These will be nice additions to the ranks for the Space Wolves, adding some badly needed variety.