Best thing I suppose, is to go to your nearest specialist exhaust supplier, get them to check in there books and see if there is a twin pipe that will fit your car, must admit i've never seen one on a 1600 driver before, normaly just a single pipe, I could be wrong.
If there is one listed there is more than likely a bracket that fits around the box itself, like a strap so you can move it to which ever position suits,
your supplier may be able to get hold of the bracket on its own, Worth a try.
