With the ROG 37/7 you get a white 375 (+ you can also drive it) to tow around even if you don't have any other 375's So if one gets the engineering pack with the two relivered br 66's do you get a br 385 to tow or do you need to own a route with a br 385 to use the br 66 tow option?
Engineering pack doesn't come with a 385, it layers in the Edinburgh - Glasgow ones. The only contents of the pack are the two reskinned 66s and two reskinned Seacow wagons.