I posted back on 4/30/06 and I wanted to comment again. I've owned my Tundra 2 1/2 years now and I'm totally satisfied. I did put flowmasters 70 series (duals) on it and I'm very pleased. Additionally, I did put a K&N filter in it as well. I like the sound of it but more importantly my MPG is decent now. I don't drive like a race car driver but I do use it like a truck. City driving I get 16-17. Highway is 19 to 22. Here is the secret... 70 MPH is where I stop getting 20 MPG or better. It drops down to 18-19 MPG.
I like everything about my truck. I have no intentions of trading it in.
It still bugs me about no transmission dipstick but I just had my 30,000 mile service down and the fluid was just fine. The only other item that I'm looking at now is raising the front end to be be level with the rear. I like 4x4s to be the same height.