Now Brian welds a 3/8 thick by 6x4-inch plate to the inner rails. | 
A 1 5/8-inch-thick piece of rollcage tubing will add strength between the rails. Brian cuts a 41-inch section and test-fits it between the plates he has welded onto the rails. |
The tubing is welded at six points: the two corners, near the spring perches, and on either side of the center brace. | 
Here's the tubing welded into place. |
Brian points to the area where the framerail is the weakest, which, if not reinforced properly, can bend under big stress after the rails are cut. "This is where we're going to reinforce it the most," Brian states. | 
Two plates are used on each side for this weak area. Brian welds the first one into place. |
My BMR lower control arms are removed so Brian can position and shape the second plate. Once it's the correct size, he welds it up. | 
When all's said and done, each side has four new plates added for reinforcement. Two here... |
The one under the tubular bar, and this one, located just behind the bar (tack-welded in this photo). | |