So decided to look for a deep tool box for the bed of truck.
Not sure what the measurements are have to check again.
Does anyone know a good deep toolbox for stepside is?
I've asked few people and they said deezee or UWS.

 

I was told before that the product number for a UWS toolbox is TBS-54-SPLA-LP. Try to contact the company directly to confirm this.

 

You know the dimensions for for the stepside ? And I just sent uws a email