I'm making plans to purchase rolling stock but I don't really know which engines pull what freight in real life.
I've just gone on google images for wagons etc but I don't know how to identify which wagons are suitable for which engines with regard to brake systems. My 66s for instance will be on intermodal duties to begin with.
My biggest grey area is coaches. Would for instance a class 37 pull MK3 coaches? I've actually been planning a swallow livery 37 with matching mk2 coaches.