The set consists of three photo etch sheets. Two of these are unpainted brass color the other is pre- colored for you. You get parts to replace and also detail the upper turret and the rear gun position. Also included are parts to replace the front and rear entry hatches and ladders. Additionally, there are new shelves for the waist gunners’ ammo boxes and new ammo boxes to sit on them. The final parts are new gun barrels for the many machine guns (13 in all).
The instructions are quite adequate in explaining the bending and placement of the details. They also tell you what you have to remove on the existing parts so they will fit.