Do you mean a 'roll bar' Tapage?
I'm not sure how much the body would flex without the roof panel, but I'd expect a fibreglass replacement would be more than strong enough if fitted properly.
I have seen different brands of 4WDs that have rolled over and it seems quite common that there isn't much strength in the pillars on any of them. I'd feel a bit safer if there was a roll bar in mine, even though I'm fairly careful when I drive it off-road.
I'm not sure how much the body would flex without the roof panel, but I'd expect a fibreglass replacement would be more than strong enough if fitted properly.
I have seen different brands of 4WDs that have rolled over and it seems quite common that there isn't much strength in the pillars on any of them. I'd feel a bit safer if there was a roll bar in mine, even though I'm fairly careful when I drive it off-road.