Got a little more work done today. Added a large cross brace across the frame. I put it where the rear leaf spring mount is on the frame, which worked out to be lined up where the rear tires will sit on the trailer. I also welded in the other ramp crossbar. I'm going to add a few more braces and then start working on the wood. Here are some pics form today:
This show about where the Passport will sit on it: