Thank you cloggy for these information.
There is a person on " Le Guide Vert " who spoke vaguely in this way of proceeding, he has to make it for a CAN-AM, I'm going to contact him.
What annoys me a little, it's that I must send the bike to England, that makes some more of additional costs.
Otherwise, I've the solution to run with a Title of a 1981 KLX250, a person suggested me selling me one, I haven't the right to make that, but I shall take the left !!!LOL!!!