Here's a couple of examples of Thompson mods.
These two are based on older tooled vehicles, which have been extensively reworked. I ve done a a few on newer retooled versions but at the price of these vehicles, the work is not for the faint hearted!
The Kitchen car is complete. The open 1st is far from complete.
The work under taken involved reworking the roof, and then reapplying the rain strips and destination holders. a section of body to mount the Southern Pride sides. Underframe has been cut out on the kitchen car not yet on the open car.
If I went further I'd replace / cut down the corridor connector which is too high.
It's a lot of work but worth it.
Note in the picture the open car is partially in shade the colour is the same throughout