Welcome to the Stovebolt.
Go to
this link and find post #5. Within post #5 is a section about speakers. I have not fully reviewed it but it should have the info you need, or at least help some.
This post seems especially good if you have an original speaker.
This FAQ section link has a wealth of info. You will need to patiently search for what you need, but it really has about 90% of the helpful tips that most people ask questions about.
Let's see some pictures of the truck and let us know some details too. We love pictures.
Jay
