Thanks guys,
Great to get some feedback on them.
I had a chat with them yesterday and sound fine so will probably get some stuff to them shortly.
Sounds like header pipes are fine, the only questionable item is a fairly pitted collector box which I think is basically a suck it and see job when they start polishing - if it goes too far before smoothing out it's scrap. I'll give that some thought but luckily do have spares if the worst happens.
Cheers,
Andy