Not being a die-hard Star Wars fan, I cannot react to the accuracy of your model. But, on its own merits, it is darn cool. Thanks for sharing! I am interested in seeing more of your work, especially any mini conversions.
If you look for the other threads started on this very Forum page by me, you will see tons more of my work!
I'm glad you liek the Hailfire, it's not an exact replica, but considering I built it from an old GI Joe toy and the cardboard from a box of cereal, I'm pretty happy with it.