details

Just wrapping up assembling the Walthers Cornerstone Roof Details. I’ve realized that I don’t know the exact prototypical placement of the various types of vents in the kit. Can anybody provide any insight/tips? The kit comes with everything pictured below:

I want to detail a sd40-2 with all the details -- my problem is i would like to have a schematic of a conrail sd40 for io know where to put the details. So far i have a older bb athern repowered with a new arthern motor/board from a genisis a digitrack dh163 decoder. Also what could i use for...