Thanks for the input! I ordered 90 degree and a 45 degree 3" inside diameter rubber boots and a 12" length of 3" diameter aluminum tubing from
www.intakehoses.com. With shipping, came in under $50.
Thanks for the suggestion about using the foil backed fiberglass HVAC insulation material Spencer. I like that better than the foam pipe insulation material Pedro mentioned using.
Puzzled by what you were referring to when you mentioned "all that dust in the engine bay"...
I'll post pictures when I get things installed, and share my subjective opinion as to how it sounds.