Today I got the toolbox mounted with "Buyers" brackets. Was able to use mostly existing holes to mount the brackets with left over 1/2" grade 8 bolts. The totes I picked up at Walmart to organize the toolbox fit nicely.
Started the fabrication of the winch cable pulley from a snatch block. It won't be welded on until after the center channel is mounted. The winch and cable will be offset 4-1/2" to the left from dead center. this allows me to get a nice strait pull hooking up to the trailer like I do. The winch will be mounted between the frame rails, just above the new section of driveshaft, about 4' - 5' back from the sheave.
I've used this brand snatch block from tractor supply before and they work great exept when the snap ring comes off, the pully goes flying and the trailer free rolls backwards off the truck fast enough to destroy the winch mount when the cable finally catches it. Fortunatly I didn't damage the trailer BOTH times that happened. This is why I am using a 1" grade 8 bolt with a locknut. That never failed on me since I went that route with the last one.
P.S. My last 4" sheave that went flying out at the speed of light is somewhere in Goshen Indiana and I never was able to find it. $20 reward if found.
The angle reinforcing the sheave on the first crossmember is also a reinforcement for the center channel. This first crossmember takes a lot of stress and the welds often cracked here on the center channel on the last truck so this should cure that problem.