Stillvaning, I do not believe these brackets will make any difference in regards to the gap between the awning and the van body. If anything it may be a bit more pronounced.
Salivan, I was actually thinking the same thing at one point (using the SMB front bracket instead of Z's). However, this will not work as they are different heights and Z's bracket supports the weight of the awning up front and in back. Here is a picture showing the difference.
I finally worked on test fitting the brackets and the awning today. It took some trial & error to get them installed properly and I did have to slightly bend the angles of the middle and front brackets to get everything lined up. I am coming from the original SMB brackets, so I had to take out some more of the gutter filling to get them to clamp securely. I wanted to back metal piece to sit in the gap since there was way too little overlap. Removing the gutter filling was extremely easy with a Dremel tool. I figured this was a lot simpler than cutting the clamping pieces as another member did, especially since I do not have a plasma cutter. If you look closely, you can see the pencil marks indicating the additional space I needed.
The front clamp does not sit completely flush against the van, but it feels very secure and does not affect the opening/closing of the door.
I'm using the existing holes in the awning and I've marked where to drill through on the brackets. I'm going to use a 1/4" bit for these holes and then get the brackets and clamping pieces powder coated. I'm going with a 1/4" hole since the powder coating will close it up a bit. After that I can do the final install. I was able to get the awning onto the brackets myself and it was really secure, even without bolting it to the brackets. Also, it seems like the weight of the awning helps snug the brackets up to the van body.
I need to get some butyl tape (or something similar) to cover the existing holes from the original brackets. Does anyone know where to get this that would be relatively inexpensive? I found this but I'm not sure it is what I need and it is also in gray, not black -
http://www.amazon.com/Incom-RE20758-...rds=butyl+tape