This is the direction for making a receiver antenna.

While on the road, if the car flips upside down, the outward antenna
or pipes can act as obstacles.
This is how you secure the receiver antenna to the inside of the body.

Use the leftover piece from the previous coloring of the new body.

Use a drill that is the same size as or a bit bigger than the receiver wire

When one has no access to a drill, this routine of making a hole can be
substituted with a knife.

Attach it with the double-sided adhesive tape.