I have been considering doing N Scale but the lack of an MP15AC in plastic has held me back.Mark 4 Design was going to do an MP15AC conversion kit but due to the MP15AC being longer he decided against doing the conversion kit.I am wondering about how to go about doing these using the Atlas MP15DC as a starting point,it wouldn't have to be scale length as the difference would be only 1/8" scale length.i am planning on using some Kato SD40-2's with the fuel tanks shortened but I have no way in doing that and no skill in that kind of thing.The layout would be 12'x12' U shaped with 20" radius.Any suggestions will be appreciated as I am in HO Scale and all these items are available ot soon will be available and there is no idea when Intermountain is going to release the N Scale SD40-2 and how good it will be based on the SD45-2 and SD40T-2. The era will be 1979-1985 as if the Milwaukee rebuilt it's entire Iowa Division and eas in a healthy state money wise.I am modeling from Perry,Iowa - Savanna,Illinois. Steve Church Milwaukee Road Iowa Division