Can anyone let me know where i can source some (new) trim for my classic impreza.

I have had a full re-spray on my 4 door classic and would like to replace some of the damaged and scruffy trim that is located on the doors (all 4) and the large sweeping trim which goes from front pillar to back screen pillar all along the side of the car (black plastic on a thin metal)

I have just called parts dept. at Herritage Leicester and they were Less than helpful when i tried to find out a price or even if they could source these for me !!!

Am i right believeing that these are a universal part??

Does anyone know the cheapest place where i can get these please ??

thanks
Minty.