Are you looking to buy or build? This thread was my first attempt.

http://www.dootalk.com/forums/topic/378258-cargo-box-for-tundra-sport/page__hl__%20tundra%20%20cargo%20%20box

I have since moved on to a T-slots attachment system that allows multiple attachment options for all sorts of things.

Good Luck.

 

I am looking to take mine to Frontier Fab and get one made. Oversized with a window to haul a dog.

 

I'll have to ask the previous owner where he got the box on my tundra lt.

 

suv1 set the bar pretty high with his carbon fiber box , but there are some other great builds for us regular guys

http://www.dootalk.com/forums/topic/265217-swt-cargo-box/

 

Here is a semi prototype a pal just did for his Tundra LT.

 

Another picture: