Hee hee - well, I'm kinda making it my business to know as much as I can about the different 450cc options at the moment x
A while back I speculated that a DRZ400 might make a good basis for a budget Dakar entry (not least the reliability of the engine and the easy/cheap availablity of spare parts) and I found this little gem recently:
There is the spec and more info here: http://www.ivokastan.cz/index.php?pg=061214
Although it is in Czech of course... seems very similar to what I was proposing though (450cc kit etc)...
Also, it turns out it was the same guy who rode the pit-bike in the Dakar last year (nutter!)... small world this Rally lark init?
ps. I love Yosemite - I'll be in touch x