I agree with blackeye, Dave with aluminess will work with you on whatever type of roof rack you need. I will let you know more in detail about our racks once we take delivery of our SMB.
blackeye,
What size window does your SMB have on the passenger side? We saw your van and your amazing looking custom rack when we were in SMB to check on our rig. Looking real good! Here is a pic.
I am not sure of the exact size. We wanted a little more visibility and light at the sofa / bed area. I think that it is one of the "bay" windows. They gave us the option of upgrading the standard to this style. I really like the awning style vs. the slider.
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"I wonder as I wander out under the sky..."