Hi Bob
Couple of suggestions
George Turner does a range of figures including 1/16
George Turner
Tamiya do a range of 1/16th scale plastic military figures, these of course would need modification to your requirements
Netmerchants
Cap-Marquettes do 1/15th scale figures which might be close enough
http://www.cap-maquettes.com/shopglobal/index_gb.html
Hope you find what your looking for,
Regards Kevin