First off, I am luckily in a position where I can afford to save 2511 and I'm willing to do so regardless of the cost, up to a point of course.
I bought some new old stock pieces from an owner in Oregon at prices that were greater than they should have been. Beggars can't be choosers, however.
I was also lucky enough to obtain a lead on a complete front clip which also contributed some pieces.
Johnny Woods out of the UK makes some excellent sheet-metal replacements and lists his items on USA eBay. You probably are already aware of him.
When looking for your parts just keep posting your requests to the forums and follow all the leads you get. The parts are out there but not easily found or cheaply priced.