diff --git a/data/ascension_overrides.json b/data/ascension_overrides.json
index 59512b5..b45029f 100644
--- a/data/ascension_overrides.json
+++ b/data/ascension_overrides.json
@@ -4,6 +4,9 @@
   "_dungeon_replacements_comment": "When the kg map is the wrong layout for Ascension (e.g. retail/Cata layout vs classic), replace the entire dungeon's map with one we author manually. Coords are in the new map's pixel space (0..width, 0..height). Bosses come from AtlasLoot's per-dungeon entries with cords.",
   "dungeon_replacements": {},
 
+  "_map_image_swaps_comment": "Swap the rendered image for one or more floors WITHOUT changing the kg enemy/pack/patrol data. Coords stay in kg's pixel space; the swapped image is force-stretched to those dims by the browser. Use this when a different render of the SAME WoW texture is sharper but has a different aspect ratio.",
+  "map_image_swaps": {},
+
   "overrides": [
     {
       "tile_key": "stratholme",
diff --git a/tools/kg_build_data.py b/tools/kg_build_data.py
index 61c2419..e7e60e4 100644
--- a/tools/kg_build_data.py
+++ b/tools/kg_build_data.py
@@ -226,10 +226,12 @@ def main() -> int:
 
     overrides = []
     dungeon_replacements = {}
+    map_image_swaps = {}
     if OVERRIDES_PATH.exists():
         ov_doc = json.loads(OVERRIDES_PATH.read_text())
         overrides = ov_doc.get("overrides", [])
         dungeon_replacements = ov_doc.get("dungeon_replacements", {})
+        map_image_swaps = ov_doc.get("map_image_swaps", {})
 
     # Load AtlasLoot map data on demand for dungeon replacements.
     atlasloot_data = None
@@ -389,6 +391,29 @@ def main() -> int:
                     ex["kg_floor_id"] = new_floor
                     ex["ascension_override"] = True
 
+            # Map image swap: rescale every coord from kg's pixel space
+            # (image dimensions in floor_summary) into the new image space.
+            swap = map_image_swaps.get(d["tile_key"])
+            if swap:
+                new_w, new_h = swap["width"], swap["height"]
+                for m in entry["maps"]:
+                    sx = new_w / m["width"]
+                    sy = new_h / m["height"]
+                    m["width"], m["height"] = new_w, new_h
+                    for e in m["enemies"]:
+                        e["pos"] = [round(e["pos"][0] * sx, 1), round(e["pos"][1] * sy, 1)]
+                    for p in m["packs"]:
+                        p["vertices"] = [[round(v[0] * sx, 1), round(v[1] * sy, 1)] for v in p["vertices"]]
+                    for pa in m["patrols"]:
+                        pa["vertices"] = [[round(v[0] * sx, 1), round(v[1] * sy, 1)] for v in pa["vertices"]]
+                    for ic in m["icons"]:
+                        ic["pos"] = [round(ic["pos"][0] * sx, 1), round(ic["pos"][1] * sy, 1)]
+                # Extras already use the kg pixel space; rescale too.
+                # Use the first map's pre-swap factor — extras are dungeon-level.
+                for ex in entry.get("extras", []):
+                    ex["pos"] = [round(ex["pos"][0] * (new_w / 6144), 1),
+                                 round(ex["pos"][1] * (new_h / 4096), 1)]
+
             dungeons.append(entry)
 
     dungeons.sort(key=lambda d: d["name"])