Hi,
i read somewhere it was resued to make the new funnel with, it you look closely at the new funnel, you can see the forward part of the red part is the same shape as the old white parts, with a new section added at the rear, i believe the windscoop was also resued, just widened in the middle.
Also, if you look at the new funnel closely, you can see some slight distortion of the aluminium which I read dates back to a steam days fire which scored the funnel, this would back up the idea of the original being reused.
Am at work at the mo, so don't have references for this to hand, if no one else provides before hand, will look it up when I can from home.
Regards Andy