It seems to be the same sort of fittings as the Oztrail bag awning. I think the fittings must be in the bag and needs roof racks. I've found a how to with the oztrails and roof racks. I was hoping I wouldn't need them.
If you put a pic of your Hiace up and pull the awning out of the package and put a couple of pix of the mounting side I will be able to see how it mounts and where you want to mount it..
Otherwise i will goto BCF and have a look at an Oztrail tomorra for you..
I honestly dont think you would need a roof rack..
Thanks so much Bob. That's very kind of you. I've found this link which appears to be same fitting as mine but I haven't found the brackets in the packet yet. I will have a good look tomorrow and take a photo of the van. It's just a normal Hiace 2005 model. No high roof or pop top just normal van roof.
Looks like you can mount it directly onto you Hiace by using longer bolts from the body of the awning into your roof and putting a couple of reinforcing plates inside your van or by getting a couple of brackets made to fit on the outside of your van just above the gutter and screwing it to that..
If you were anywhere near here (Grafton)I would be happy to put it on for you..