[patrickk1]

You'll see people in both camps of the box or no box. You'll also see that manufactures have changed how they have designed their frame over the years. Most frame use to be made with C channel, yet 67-77 bronco frames were fully boxed from the factory (essentially to C channels welded together). Most GM convertibles were also boxed. S10 frames were boxed from the front to the middle of the frame. Most new truck frames are fully boxed. I prefer to have a stiff frame and let the suspension do the work, whether that's offroad or on a corner carver. If you partially box a frame you should fishmouth the end of the boxed section like they do on the s10. Even the 60-62 xframes were boxed at both ends with a large x-member in the middle.