I beleive the maximum motorsports cages swing low across the doors. I beleive the 6-point or 8[point ones are what you are looking for.
I did some research a while back because i need the same thing answered for my '85GT with T-tops. Unless you go 10-point, the majority of cages out there don't have the hgih roof bars that you would see. Most have the main loop behind the driver, two bars into the hatch and then two low door bars you will never see with the doors shut