Yes, you should be able to source it from the US, so long as you keep it under the $100 limit. Keep in mind that Numrich has a $25 surcharge for exports.
I would try Western Gun Parts to see if they have any. They list these the Police model wood in their catalogue as follows:
Forend: #93766
Stock assembly #93795 (I'm not sure if this includes a recoil pad or not)
w ww.westerngunparts.com