right, i have recently fitted a bride seat to my Glanza and the easiest way that we found was to create a subframe from scratch. it came with no rails so you maybe able to modify those to fit. in mine we originally planned to use the standard glanza frames to mount the seat on but this was nearly impossible, instead we cut some small box steel to make a frame on the bottom of the seat, then we fitted this to some aluminium lengths that we mounted to the bottom of the car. this was by far the easiest way that we found. hope this helps you. (i have some pics of the build up that i will try and get posted as well)