Great! I'm working on a DUST conversion list as well (great looking models!), but with the vehicle construction guide you can pretty much make any vehicle you want. I've found that Wikipedia is very valuable when determining speeds, armor, etc. While there's no hard ""x" mm of armor = "y" armor value," you can see the stats of say, a Sherman tank, and in looking at armor say, well the vehicle is a little less armored than a Sherman, so call the AV a 4, instead of 5, an so on. Happy to answer any questions about it.
Best,
-Jon-