TWIN SCOOPS 4" Hole location?

Here's some pics taken when I lived in Hinton

http://www.angelfire.com/ca2/stalks/Duster/Duster.html

Only changes are a chin spoiler and rallye mirrors. I thought about help on the cooling aspect as well, as far as carb heat a sheild under the carb helped a lot as well as some insulation on the heater hoses where they run past the fuel filter.