i have 2 crossbars like the one pictured made by Cross Tread. Here is the link showing stock pics and the specs--------best I can tell these represent the 600 series showing there at $165. However my crossbars DO NOT INCLUDE THE GUTTER MOUNTS so you would have to contact them to purchase them separately.
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These were being used on a 78 dodge extended work van and I removed them when I bought the van some time ago and obviously lost the mounts. Guessing they can be used on other vans as well since they are adjustable in length. I'm sure this link will give direction on that and the mounts you will need
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