[redrooster]

The goal obviously is to add support in the case of either side rolls or front and rear rolls. Several things you may want to look at:
1. Add a horizontal dash bar on that ORfab setup. It could be smaller diameter to maintain visibilty.
2. Use a smaller diameter bar at a 45 between your A pillar and the overhead bars (grab handle-esq). This will help support the A pillar if you endo.
3. Overhead bars like this looking from above [/\] will help keep everything square from front, rear and side rolls. Also help keep the rocks off your noggin.
4. Tie the A and B pillars into the frame with sandwich plates at the body and tubes down to the frame. You can use rubber bushings where the tubes mount to allow the body to flex if you like.

If you want to go one step further, add a cross bar with diagonal bars to your B hoop. These bars would strenghten the cage in a side roll. Look something like this from the rear _\/_. If you plan on having back seat passengers, you may consider adding support there by installing bars overhead and tying the C pillars in to the frame.

For those that don't know, the A pillar are your post coming up by the windshield, B is the roll bar behind the seats and C is the bars coming off your rear fenders.