Prestige have the lower rad hose:
https://www.prestigemotorservices.co...em-216351.html
I couldn't find the oil cooler hose anywhere when I did Big Red. No new ones, and all used ones had melted due to oil contamination, so I made one out of a couple of other hoses from my big box of 'it'll be useful one day' stuff. I think they may have been D2 V8 heater hoses. That one is used on the A4, A6 and Passat too so its surprising there isn't an aftermarket option tbh.