Cheers man, gitten there gitten there.
Some quality ear protection is definitely on the cards. I'm not the kind of person to lose their hearing over work related stuff.
I have some exhaust extraction stuff and will need to adapt it to my situation. It'll be easy enough, I've done sheet metal work back in the day. It'll either go out the back wall or up and over the whole lot. Speaking of which, I think I'll protect the back wall with some sheet metal, give me an excuse to buy a rivet gun, air powered or otherwise. There's plenty of dyno cell pics to get inspiration from.
I'm looking forward to using the dyno in the shed, it's pretty bogan having it in the driveway and I prefer some privacy lol.