Summit Rollcage

Before I have a shop bend up tube does anyone know of a commercially available cage thats designed to be installed in cars without interiors?IE bars pass through the dash,Main hoop so close to the roof that the headliner wont fit,etc?I've been looking at some of the pictures of these cages and all of them their fit is horrible by my standards.A pillar bars that curve around the dash,under dash cross bars, 5" gaps between the main hoop and the sides of the car,atleast 3" away from the roof,etc.All of those "good fitting" cages would be absolutely lethal to anyone not belted in with an 8 pt harness wearing a helmet.The human body stretches a surprising amount in a severe crash.