Nope. The TB on a 1.8T is in a completely different spot than the TDI's intake. And I'm relatively certain the turbo to intercooler pipe for the 1.8T connects in a different location. You might, however, be able to use the hard lower pipe from the 1.8T with the TDI rubber hose. In either case, you might be better off getting some cheap and dirty pipes bent at a shop, or maybe just pick the right parts up from a junked TDI.
--Matt