Removing exhaust manifolds to re-paint?

Is it worth removing them to repaint of should I just paint them on the engine?

They are looking a bit rusty round the bottom so I thought I'd pull them off, de grease, re rust and re paint but I'm not sure if I'm opening a can of worms removing them.

They are 3 years old and have stainless ARP bolts (like the rest of my engine) and should come off easy enough. I haven't any gaskets to replace and getting stuff like that in the UK is damn expensive so should I just leave them on?


Any thoughts?