If the Bigsby tremolo you want to install requires cutting into the guitar, you should carefully consider the location and size of the cut. You don't want to damage the guitar or compromise its structural integrity. If you are not comfortable making the necessary modifications yourself, it's best to take the guitar to a qualified guitar technician.
Here are some general guidelines for installing a Bigsby tremolo on a guitar without built in:
1. Choose the right Bigsby tremolo for your guitar. There are different types of Bigsby tremolos available, so you need to choose one that is compatible with your guitar. Some factors to consider include the guitar's body style, the string spacing, and the desired tremolo effect.
2. Determine the location of the tremolo. The best place to mount the tremolo is usually near the bridge, where it can be easily accessed and will have the most effect on the strings.
3. Mark the location of the tremolo. Use a pencil or other marking tool to mark the spot where you will be drilling the holes for the tremolo. Make sure the marks are accurate and centered.
4. Drill the holes. Use a drill bit that is slightly smaller than the diameter of the screws that will hold the tremolo in place. Drill the holes carefully, making sure not to damage the guitar.
5. Install the tremolo. Place the tremolo in the holes and secure it with the screws. Make sure the tremolo is tight and secure.
6. Adjust the tremolo. Once the tremolo is installed, you may need to adjust the springs or other components to get the desired tremolo effect.