If you want to use polybushes rather than OE
then the type best suited to a road going Puma are Powerflex.
They come in two compounds `Black` and `Purple`
You would want the Purple ones (the Black are for race applications and are rock hard!)
They are available on fleabay, as well as places like Demon tweeks. (the prices are much the same, but you can call `Tweeks for advice ;-) )
They are listed as for the application. eg Ford Puma anti roll bar. etc.,