You improved the model nicely. I have had this model for years, but it is still unbuilt in the box. The basic details are good on this trailer, but as you stated, some are out of scale.
The Thermo King unit is one of the most accurate and detailed of any in ay scale. If the engine doors had opened, that would have put it over the top.
I built the Monogram reefer sometime ago. Your build is inspirational.