You could try around Dunsink lane in Finglas, there used to be a few traveller / scrap merchants there, havn't been there is years so not sure if they are still there, else have a look on the Buy and sell.
There are loads of properly registered car dismantlers in the yellow pages you could call. front parts, I would imagine, would be thin on the ground with crashed cars. Could also Try GSF car parts in Clondalkin.