Thanks Ian.
That looks awesome.
I initially asked for an external design but no matter how much I try to convince any of the fabricators, they just will not touch any external cage ideas. They gave me an explanation which was reasonable and makes sense but at the end of the day I know nothing about cages and designers will always see it from the standards that CAMS have issued.
They all agree, if the car just pops onto it's roof or drops onto it's side the external cage design will be more then capable, but if the vehicle rolls at speed and sideway forces on the bars come into play then the cage becomes dangerous. That's not my belief, just their explanation and belief.
So that is why I have to go with the internal. Also they wouldn't do anything without an internal hoop, which might not be to everybody's liking.
The mounting points and distance the cage is placed from seats and back rest's etc I am happy with. I'm not sure how the SD cage sits though..
Cheers

