Toyota still refers to the 250 as light duty though
Upper control arms are different and look beefier on the 300 (not sure about lower)
Less underbody protection in some areas
i feel like i quoted
@TeCKis300 a million times to explain this
Front bump stops - the 250 GX has a single stop, the LX600/LC300 utilizes two like the 200
Body mounts - the two largest ones in the mid section, the 300-series brackets are larger and tie into a longer section of frame
Front LCA pickup points - 300-series pickups are tighter in to the frame and would be geometrically stronger/stiffer
..
And this is without us even having access to the vehicles side by side
Toyota themselves say the 250 is light duty,
Could the differences above be enough for classify it as light duty or as you said other hidden parts that we won't know off until we compare part numbers?
View attachment 3391537View attachment 3391538