cool, give me a nudge if i haven't posted a pic in a week or two, it'll probably be a rough sketch but it'll give you an idea.
Are you modding the subframe on the bike?
as i'm not sure if a race can would fit under the stock seat, i'm building a whole different bike really......see here.... http://www.bmwr65.org/cgi-bin/yabb2/YaBB.pl?num=1360707787.....
Elliott