This cowl fits the 1958 Tri Pacer designed by Bill Bradley featured in the July issue of Model Airplane News.
Bill wanted you to have a cowl that is tough, so It is formed with .040 Plastic.
Assembly is required using model airplane cement and I haven’t found a paint type that will damage the plastic.
Not sure about the scale but the cowl measures:
firewall to the nose 5 1/8 inch
firewall width 5 1/4 inches.
firewall heigth 5 inches