Here's what I used:
Spectre Performance 9964 Air Intake Kit https://amzn.to/2HcVoTg

Before and after of the Spectre Cold Air Intake on a 2005 Tundra 4.7 Litre V8. Listen to the before and after recordings to get an idea of what adding a cold air intake to your stock engine will sound like. I include a few tips on the installation and test drive so you can hear it on the road.