I don't mean to debate this with the previous post, but would from my own experience highly recommend 4 Corners Transport out of the Seattle area. He is indeed a broker. I've used him several times with great success and hauling a non running vehicle is not an issue. Virtually every car I've had him haul for me was missing the engine. His pricing has always been competitive and the best part about it is you only pay him his cut at the time the load is scheduled and you pay the trucker the balance upon delivery.
One time we were having trouble getting a pickup completed in Southern CA and this broker put part of his commission on the hauling side to help get the run done. He actively manages the haul all the way to the end. Each driver he'd used for mine was a good, careful, conscientious guy.
I'd tried other big name firms who wanted full payment up front and was very unhappy with the service and frankly their attitude. They were peaches and creme until they got paid, then it was "We'll get to it when we get to it".
Look up transportreviews.com and you can see feedback for all sorts of haulers. It's a great help in getting to the right decision. Previous advice is otherwise right on: it's better to find a solid builder and pay a little more up front getting it to your door. I learned that the hard way years ago.