Diocars
For more than three decades, Diocars has been a trusted name in custom cars, kit cars, and classic vehicle appraisals. Founded by Bill Bonadio, one of the pioneers of the modern kit car industry, Diocars blends craftsmanship with creativity to bring timeless automotive dreams to life.
Whether you’re protecting the value of your classic, building your own showpiece, or searching for something ready to drive, Diocars is here to help every step of the way.
Where Classics Live and Legends Begin
Bill Bonadio
Bill Bonadio built his first custom car at 18, turning a teenager’s passion into a lifelong craft. By 1977, he was trained through Ford Motor Company as an appraiser and quickly became known for his ability to value and restore classics with precision.
In 1991, he launched Diocars, producing award-winning kit cars that gained national recognition. Today, with over 35 years of experience, Bill remains one of the longest-running kit car builders in the industry — a trusted expert dedicated to cars built with care, detail, and integrity.
Appraisals
Every classic car has a story — and a value worth protecting. With over 35 years of hands-on experience in custom builds and restorations, Bill Bonadio offers professional appraisal services you can trust. Whether for insurance, resale, or peace of mind, we deliver detailed evaluations that go beyond surface shine. Originality, craftsmanship, and market demand are all considered to ensure your car’s true worth is recognized.
Car Kits
Your dream build starts with the right kit. At Diocars, we offer two unique models that capture the spirit of classic design, allowing you the freedom to build it your way.
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Dio Tipo 61 — A tribute to the iconic Ambro sports car of the 1960s, designed to fit a variety of donor chassis or a custom tube frame.
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Dio S-40 — A bold transformation for Chevy Blazers, GMC Jimmys, and S-Series pickups, turning everyday trucks into unforgettable classics.
Whether you’re a first-time builder or a seasoned craftsman, our kits put the excitement of custom creation directly in your hands.
Cars for Sale
Not everyone wants to start from scratch — and that’s why our lot is stocked with a rotating mix of classic cars and pre-built kit cars. Some are carefully restored originals ready for their next chapter. Others are turn-key Dio models, built by us and ready to drive home today.
Every vehicle benefits from our appraisal expertise, so you can trust its value as much as its style. From vintage collector’s pieces to unique kit creations, our lot has something for every enthusiast — and the inventory is always changing.
Ready to Get Started?
Whether you need a trusted appraisal, a custom kit to build your dream ride, or a ready-to-drive classic, Diocars has you covered. Contact us today to schedule an appraisal, order your kit, or check out what’s available on the lot. Your next automotive adventure begins here.