Nice build, I didn't notice you miss the exhaust and the antenna before you draw our attention to missing parts
The weathering is awesome. Just one remark if I may, why didn't you apply the same weathering on the rubber skirts as on the rest of the model ? I think they should be more or less dirty/muddy like the bottom of the vehicle.
As far as the antenna is concerned, I never set it in place as I move too often and have enough broken or "unglued" parts to fix after each moves. Lazy one, I know :-)