Polland used its 105mm Wz.29 model (Schneider M.25 L/31 made by licence from 1934).
Hungary bought Bofors 105mm long gun (31 M.) and 150 mm medium howitzer (also 31 M.). Both were made in Hungary by licence by MAWAG.
http://www.dws.xip.pl/bron/wegry/we60.html
http://www.dws.xip.pl/bron/wegry/we62.html
These model were of modular type - there is one interesting piece in Belgrade museum - 31 M. 105mm carriage with 150mm gun.
Finland:
http://www.jaegerplatoon.net/ARTILLERY4.htm (Finland also bought four 150mm guns to be used on the same carriages - idea was to use 105mm or 150mm ordnance as situation arose.)