I recall the sound of a 8F as much better sound than the 2-8-0 WD which got many nicknames due to the sound it made and which could be heard before seen trundling along at 30 to 40 mph around Grimsby in my youth. The bed irons, clangers and tin cans very common from Frodingham, Immingham and Retford sheds in the area always leaking steam, grimey and often running tender first with lime and iron scale leaks stains never seemed popular with crews or spotters and I would say a bad choice to fit a 8F sound chip in as a substitute sound. I was amazed how good the 2-10-0 WD preserved loco sounded which I had seen on the NYMR a few years back which shows how good care or perhaps how the two WD differed, the 2-10-0 WD I understand was a much better loco design.