Ebay has two NT top boxes for $534.95 each. GIVI will also take half a thousand dollars, if you are so inclined. Me? I'm cheap. Five years ago, I bought a top box from JC Whitney for $79.95 for my 2005 Kawasaki Vulcan 500. The mount is INCLUDED in that price. I kept the box when I bought the NT.
Click on this link to see how it fits on the NT:
https://picasaweb.google.com/102466557271682855730/NTTopBox?authkey=Gv1sRgCLqHtfHD2a_HKA
If you click on the leftmost picture it will enlarge. Put your mouse on the space to the left or right of each pic and a grey arrow will take you to the next picture.
If you enter 61304-165-013 in google, you will find numerous sources for the square nuts that fit under the passenger grab handles. I got two of them from a Honda BOAT parts website. Cost around $5. The four 8mm by 65mm bolts (I think 55mm bolts would also work) and the four bushings came from my local Ace Hardware. $10 for the lot. You just have to remove the two bolts (and their bushings) and two phillips screws from the tail cover, drill two holes in the plastic tail cover, remove the grab handles and put the square nuts in (TAPE THEM IN PLACE!!!!!) (Check other posts on the forum about this.) Remove the bushings for the two bolts that hold the tail piece on. The hardware store bushings are a PERFECT fit in the grab handle holes. The 65 mm bolts replace the stock bolts in the bolts and screw into the two new square bolts in front. Just put the new longer bushings in, put a washer on top of them, put the box mount plate on and screw in the 65mm bolts. Could it be any easier? Total cost, $95 for the box and hardware.
OR, you could lay out over $500+ for a GIVI (guess that weird name is worth the extra $400) or a Genuine Hondaline box.
Comments welcomed.