I'm not sure you need 3" on a naturally aspirated 4.7L...I think 2 1/4" is stock and the 2 1/2" cat-back Dynomax kit I have on my Tundra feels just about right...
Rising Sun Bio
2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering,
no more Sanden OBA
1FZ-FE factory lockers +
Safari intercooled turbo, CDL switch, cup holder, Metric TLC leather, heated seats, JDM switches, PUMA OBA.
Warn M12000 waiting for a bumper.
Limited TRD 2UZ-FE SOLD