I have no idea of the space you have to work with on the 1303 as I've never owned one. I run 17x7.5 ET 52 Cup 3 replicas on swing axle (short axles) with CB performance rotohub discs. You can see the problem - and the bolt surface wasn't even close to seating on the disc surface.
I ended up having to run 35mm spacers (that bolt to the hub, then studs for the wheels - all approved by the certifying engineer) to get the wheels away from spring plates (but still under stock fenders).
And finally finished...
hope this helps just a little maybe. but yes the search function will help.