Analog Devices has a filter wizard[0] on their site, which can help to create filters using their components. It might fit your needs, or at least give you some idea of what might be required.
It's a cool tool of course, but I have an interesting set of spurs to filter out, and they're quite close to the carrier in some places, over quite a large frequency range. I have a set of fixed filters that mostly works, but the next design will need to more completely suppress these spurs over the entire range.
[0] http://www.analog.com/designtools/en/filterwizard