Originally Posted by lakewolf
However I have to go to work on suit and tie and my bikes have all a sportive setup ( low handlebars ) so I have a bit of a problem when I ride on a suit jacket, the jacket would need more room at the back to allow me the right position.
Raise your handlebars. There's no reason a man confident enough to ride a bike wearing a suit should be a sissy about riding in an upright position. Get a stem with some rise, and some standard handlebars with some sweep. They look fine on older road bikes, as well. Get some proper fenders, if you haven't already.