which is the appropriate amount for finishing the model

This is a Bar Mills 822 HO Scale Mooney's Plumbing Emporium Building Kit

The Trainz SKU for this item is P11633465

The Trainz SKU for this item is P11539435

Switching Speed feature for easier and faster access to yard speeds

USA Trains R15020A G Frisco Outsided Braced Box Cars (Red/Silver) #7813 ProductID_11551593 which is the appropriate amountThis is a USA Trains R15020A G Scale Frisco Outsided Braced Box Cars (Red Silver) #7813. Special Features: Highly Detailed One Piece Body, Operating Doors, Separately Molded Handrails, Ladders, Corner Steps & Brake Platform, Both Hook Loop and Knuckle Couplers Provided, Brass Brake Rod, Detailed Archbar Trucks, Quality Graphics, Authentic Paint Schemes and Length: 14 3 8 Approx. Condition: Factory New (C 9) Operational Status: Functional Original Box: