I was very pleased with the gauge of the steel and that it fit really well! I had no major issues.
The drain holes are a bit over-sized but they worked. Keep in mind that this is technically a pan for a 1966 and is not concourse accurate for the 1965 cars, this is due to the areas where the parking brake cables route.
The 1965 parking brake cables route under the floor and over the frame and the 1966 cars just run the cable under the frame.
If you change your parking brake cables over to the 66 style you will have no issues.