those contemplating fitting a swallow sidecar may find this of interest, currently for sale on ebay, has the fittings as well, bit of work needed though!

322778241531

http://www.ebay.co.uk/itm/Vintage-Swallow-Sidecar-/322778241531?hash=item4b271519fb:g:6aIAAOSwVaVZx98A