You mean this one by irish?
The simple answer on the TB is no. The long answer is that there are things you can do to your existing TB. Search for TB or Throttle Body topics by me in the Performance and Brainstorming section. Or search on 'shaved throttle shaft' or similar terms.
In the long run, the TB bore is pretty well matched to the inlet of your SC. You won't gain much until you open that up, and the Gen2 M62 isn't efficient enough to have that pay off.
Start looking at KNOWN power-adding mods like valvetrain components, custom PCM, performance trans, etc to begin with. Unless you have a spare TB and a good machinist. If so, go for it now. Plenty of pics posted.