1964-66 Mustang USA-630 4-Speaker Stereo Package

Product Description

1964-66 Mustang USA-630 Stereo Package

This 1964-66 Mustang stereo package pairs a Custom Autosound 1964-66 Mustang USA-630 Radio with matched speaker hardware so you can order a complete, dash-friendly sound upgrade in one place. The radio is built for the original Mustang opening—no dash cutting for a modern aftermarket DIN chassis—and the included speakers are chosen to work with the radio’s power and preamp layout. Shoppers who want a cleaner cart and a clearer bill of materials use packages like this instead of hunting down each piece separately.

What is included

• 1964-66 Mustang USA-630 Radio
• Custom Autosound UNDERCOVER II Upgrade Speaker Enclosures
• Custom Autosound 6x9 Dual Voice Coil Speakers

Every line item in this package is a product Vintage Car Radio already stocks as a stand-alone SKU. Buying the package simply groups the radio and speakers under one product page with a package price that reflects a modest savings versus adding each item to the cart on its own. Individual product pages for the radio and speakers stay live if you prefer to mix and match later.

Front stage plus rear fill

UNDERCOVER II covers the primary stereo pair while the Custom Autosound 6x9 dual voice coil speakers add rear or package-tray fill common on early Mustangs. Dual voice coil designs help when you are driving a two-channel radio output into multiple speaker locations—confirm wiring against the radio manual before you terminate connections.

A fuller package without an amp kit

Unlike competitor kick-panel-plus-amplifier kits, this package stays inside products we stock daily: radio, Undercover II, and 6x9s. You still get a complete four-speaker story and can add amplification later if you want more volume on the highway.

Custom Autosound radio highlights

The USA-630 for 1964-66 Mustang is the workhorse Custom Autosound in-dash radio: AM/FM digital tuning, auxiliary input, USB support, and strong four-channel output that already beats a tired factory mono unit. Bluetooth can be added with the BluKit accessory when you want wireless audio later, and the CD-1 external changer remains an option. Many restorers standardize on the USA-630 for balanced features without paying for built-in Bluetooth they may not need yet.

Speakers in this package

Custom Autosound UNDERCOVER II Upgrade Speaker Enclosures. Custom Autosound 6x9 Dual Voice Coil Speakers. Together with the radio, they give you a matched starting point: clearer vocals, better stereo imaging than a single dash speaker, and a path to add an amplifier or subwoofer later using the radio’s preamp outputs where available. Undercover-style enclosures are designed to tuck into classic cars without demanding a full custom door build, which is why they appear so often next to Custom Autosound radios.

Fitment and shopping notes

Confirm your Mustang falls in the 1964-66 range listed in the title. Factory air, console, and prior radio cutouts can change how speakers mount; the product options on the radio (such as factory air when offered) still apply when this package ships the same radio SKU. If you already own speakers or only need the radio, use the stand-alone radio page instead of this package so you are not paying for hardware you will not use.

Warranty and support

Custom Autosound radios in this package are backed by the manufacturer’s 2-year warranty. Speakers carry their own brand coverage as listed on each component page. Vintage Car Radio does not offer installation services; we supply the products and can help you choose the right combination over the phone. Call 844-802-4499 with questions about fitment, Bluetooth accessories, or whether a different radio model belongs in your Mustang before you check out.

Why order a package

Competitors lean hard on vehicle-specific stereo kits because shoppers search for complete solutions—radio plus speakers—for a given year and model. This 1964-66 Mustang package answers that intent with real catalog components, a single checkout line, and SEO-friendly naming that matches how enthusiasts describe the upgrade. Keep browsing related radios and speakers on the site if you want to compare USA-230, USA-630, and USA-740 feature sets side by side, then come back to the package when you are ready for the bundled set.