Looks like this is from over seas... But the price is right.. Under $100 for all three parts..
Magna rack / back rest (http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=260555173550&viewitem=&_trkparms=clkid%3D8075648319259620911)
I have seen pictures of some of that china copycat garbage that someone tried to mount to a bike. the holes were drilled in the wrong spots where you mount to the bike. they had to oval the holes out just to make it fit. i wouldn't take a chance on it fitting properly, not to mention the wait time to ship it (if it ever arrives) :-(
I think you have something there Chad as I read through his feedback there is mention of flaking, holes not matching, also his auctions are private so you can not match-up feedback to item.
For the right person it may work out for you but expect the item might need some persuasion.