Hi Steven
Here is some Flaming River part #'s
The top u joint is a 3/4"-48 x 3/4" DD ( double 'D' shaft )
Stainless Steel - FR2528DD
Billet steel - FR1728DD
Bottom U joint is a 5/8"-36 x 3/4" DD ... I found it interesting that this is the same size as the stock Tiger rack
Stainless steel - FR2522DD
Billet Steel - FR1722DD
Double 'D' shaft - FR1859SS 18" long which is as short as they sell and you will only need half of it
They also sell splined shafts and appropriate u joints but I was unsure of exact length when I ordered so the DD shaft made it easy
With the size info, you can also shop around to other suppliers that maybe more convenient
You can see more pics of the whole setup here...
http://catmbr.org/VB_forum/album.php?albumid=7
I gave Mal Graham all the info to do his RHD one.. He's several thousand miles closer to you than I so would be a good contact for you