Exhaust System

[brainbug007]

Ok well I've picked up a bandit 1200 can with link pipe for £35 delivered which seemed pretty good So it's just the piping from the manifold to the can to sort now. I'd love to go stainless but I doubt I'd be able to weld it with my mig and skills I was thinking of just using mild steel and then covering in vht paint. So what sort of wall thickness should I be using for that?