Most Roll Cages will have a horizontal bar at the top between the down-tubes for strength and rigidity.
After checking fit I could see that this bar would be too low, obstructive, and too close to the head of the occupants.
To fix this the bar has to be raised somehow.
I looked in my pyle of discarded tubing pieces and found 2 of these.
Using these short stubs as extensions, the bar was able to be brought up higher to the roof-line.
It took a while to adjust the angles and lengths but it turned out perfectly.
In this position, the bar is at or above the windshield and allows for head clearance.
