I'm using a 1 ton G-van box. You have to use the drag link & tie rod ends from the G-van. You also have to cut the drag link and have to take a section out, it is too wide. The box will mount straight up. I make fibergl*** '41 - '46 Chevy COE fenders, grille & now hood. see my post. Glenn ozsomelaser@aol.com
My '53 runs a '73 1/2 ton rear frame and front crossmember grafted to the COE frame and '79 Chevy Van steering box.... Coupled to a '67 Chrysler tilt/tel column with two U-joints. Pics of your past and present COE's !?!
Looks sick - If you are going a long heavy duty ch***is - I would consider a front wheel drive motor home unit with dual rear axles such as the DecoLiner was based on... Featured in a recent HOT ROD mag.... http://www.randygrubb.com/the-decoliner/