{
  "kind": "cubic_smoothstep",
  "rear_bend_z_mm": -1337.7333333333336,
  "front_bend_z_mm": -1117.6000000000001,
  "retained_low_high_y_mm": [
    414.8666666666667,
    541.8666666666667
  ],
  "supplier_photo": "https://www.mgocspares.co.uk/ImageHandler/113501w1000h1000/bmh8058?Sequence=113501&Width=1000&Height=1000",
  "basis": "MGOC own BMH8058 floor assembly photo visually read:rounded pressed transition rather than sharp planar ramp. BMH8058 is a separate generic assembly comparison,not CZJ568 fitted identification. Factory233/BMH rubber-bumper floor roles remain distinct. Cubic section is chosen construction,not scaled tracing.",
  "limits": "Floor end heights,bend stations,plan outline,gauge and existing openings retain unmeasured source datums. Cubic profile/radii and projected-Y offset are estimates;photo supplies qualitative forming topology,not fitted dimensions or pressing development. Rib/holes/bosses in supplier image are not copied or assigned. Floor and paired reference members share this section without establishing actual welds,laps,loaded support,body registration or clearance. No repair/cut/weld plan,material strength or verified replacement/removal path."
}