Yo man Its a safety 21 bolt in cage , yes the rear seats are still in the car there is a removable diagonal bar that can be easily removed when passengers are in the car . To be totally honest the cage is extremely impractical in the car and I may in time just remove the back seats as there isnt much room with the diagonal bar and the other across the rear foot wells . Does feel great in the car much safer and makes the eg feel extremely planted . I could get a few snaps of the cage for you at the weekend this might be better than me explaining .
Topher - really ye was it for sale then , it was out of my pricerange aswell however went to view and loved it so had to sell some odds and ends to get the cash together .