This kit is a variation of the Tyneside Models Kerr Stuart 'Wren' as seen in '009 Society' Magazine.
No need for etches with this body. Simply clean the print, paint it and push fit it onto a Tsugawa Yokou TU-KOPPEL chassis.
http://www.ebay.co.uk/itm/Super-Mini-Size-Motorized-Chassis-TU-KOPPEL-A-Tsugawa-Yokou-14036-N-scale-/351655042567?hash=item51e0461e07:g:2q8AAOSwd4tUGlIo