All you do is fold down the sides and front

Here is an Aristo-Craft 41103 Pittsburg & Lake Erie Covered Gondola that features AAR knuckle couplers

Here is an Athearn 98039 HO Scale Erie Lackawanna EMD SD45 Diesel Locomotive #3632

with one major exception being the addition of a bulge above the radiator intake grille at the rear of the long hood

The Trainz SKU for this item is P12104787

Kadee 8219 HO Santa Fe PS-2 2-Bay Covered Hopper with HGC Trucks #82290 ProductID_12332654 All you do is foldThis is a Kadee 8219 HO Scale PS 2 2 Bay Covered Hopper with HGC Trucks Santa Fe #82290 (1957 Scheme Boxcar Red). This car features a plastic body construction with plastic trucks, plastic wheels, and operating knuckle couplers. Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: Kadee Model Number: 8219 Road Name: Atchison Topeka Santa Fe (ATSF) MSRP: $42. 95 Scale Era: HO Scale Model Type: Freight Cars