8 point roll bar

Ok some pictures would be great here, but I'm still wondering exactly how I'm going to place the six by six plates maybe bend them or cut them and reweld them to contour the rear floor board? I really don't want to weld it on the edge of the plate that seems to be a little counterproductive? And where do I place the front ones up in the drivers compartment by my feet? like back were the frame that comes through for the transmission? Or all the way up where the peddles are ?
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Also had my wife take a picture of me in the driver's seat that I set up temporarily to get proper shoulder and elbow height and she even marked it with blue tape over on the side of the car