My original question stems from a lack the holes for a cross sill before the frame hump. See link ---> http://www.woodlandsoftwaresolutions.com/additional_images/cross_sill_detail.jpg
I don't remember how it came apart. The bed to frame bolt kit I bought includes 2 long bolt for the forward mount and 6 bolt for everything from there on back. Its a little confusing.

From the "center" cross sill to "front" cross sill (pointed to by the green arrows) seems like a long way to span 3/4" thick wood planks and have it carry 1/2 ton.