You can use them and many owners rave on about them...
However... It stiffens up the natural "give" in in the suspension components which can harden the ride somewhat more.
Then you have to also take into account why most owners change to these bushes, based on others recommendations, they had failures with the standard bushes due to lack of lubrication!
So fitting polyurethane bushes seems like a lot of overkill for such a simple initial job of lubricating standard bushes... They will definitely last longer, there is no denying that but so will standard bushes if looked after properly, I have proved that...
You also have to remember that some of these uprated bushes can actually cost more than complete standard arms themselves so is it false economy?
They still need lubrication just the same when fitting otherwise they won't last as long as standard rubber bushes that have been lubricated..
So... If you like the way your car rides, thinking of changing the arms for cheaper items, greasing up the bushes before fitting and re-greasing them on a yearly basis, are poly bushes going to be a cost effective solution then?
Food for thought