Interesting. Just saw this for the first time tonight. This will make the two unsupported front frame horns much more rigid by tying them together and triangulating the brace for strength. The frame horns endure a lot of torsional twist and flex through hard cornering and also stress from the steering box on the drivers side horn.
Makes absolute sense to me and a simple bolt on. Says it will reduce many of the squeeks in the chassis because it will minimize the flex of chassis.
Here is the link: http://scandc.com/new/node/996
Dan