I had planned on fitting a ford 75mm throttle body on top of my footbox, and run some ducting to it. I had it in my mind, but thankfully it wasn't needed.
If you ever need any heat shielding / cladding / lagging products,
http://www.bellis.com.au are located at Musgrave Road, Cooper Plains. They have EVERYTHING you could ever need, and they sell trade price to the public.