The SV650s is a sweet bike and can wheelie no problem. But it's more made for the twisties than standing on 1 wheel.

You'd be better off finding an old motorcycle from the late 80s or early 90s and stripping it naked and putting a fat fat gear on the back.

But this dude right here does all the stunts you see people with 12O'Clock bars do except he has FULL fairings and no wheelie bar. Just a hole in the back seat.
http://www.youtube.com/watch?v=PiKy-_Iccqc