anyone done high-temp spray paint of downpipes

[midden]

they are not rusty, they are new so just wondered what best course of action was , prevention better than cause? mind you , as said, at that price I'm tempted to wait until I need replacement and then go for stainless.

Then why not put your standards on ebay while they're still fairly new, then once sold order the stainless?

I'm considering using cure rust on the collector box (if that's what it's called) bringing the 4 pipes to one and then painting this.  I've been told it's this box which is the actual problem and not the pipes which are apparently stainless anyway.