I am looking for a boxing kit for the frame for my 1935 chevy pickup.  Does anyone know where I can get a kit?  This would be for the entire frame not just the front end or rear end.  Thanks for your help.  

Your best option is to make some cardboard templates of the pieces you want and take them to a steel/fab shop and have them duplicated.  I work for a steel company, and we do this for a number of our customers with good results.
It will likely be cheaper and faster anyway.