
THE AUTO BUILDER
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Hot Rod Royalty: A Gathering of The Grand National Roadster Show’s Greatest Hits
Hot rod history hit overdrive at the 2025 Grand National Roadster Show, celebrating its 75th anniversary with a killer lineup in Building 9. The big deal? A special exhibit packed with a gathering of America’s Most Beautiful Roadster (AMBR) and Al Slonaker Memorial Award winners. Teaming up with the Petersen Automotive Museum, GNRS pulled together some of the most legendary roadsters ever to roll out of a garage.

GOODGUYS COLUMBUS 2008
We are continually challenged by what has previously been accomplished within a hobby that has captured the hearts of enthusiastic Americans; and just when it seems automotive imagination has reached its pinnacle, we are once again reminded of an endless flow of accomplishment and creativity that stretches the limits of the cars we build.

HOW TO PAINT SCALLOPS
We all know itʼs what lies beneath the paint that really matters—a good chassis, great metalwork, and great design. Yet, having said that, the paint job still remains the single most important element of any rod or custom. After all, even if the groundwork has been laid, your bodywork is straight and great, your design is fine and your mechanicals are flawless, a poor paint job can spoil it all.
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The Auto Builder’s Hottest Product Picks from The Triple Crown of Rodding 2026
PRODUCT SPOTLIGHT: Slant-Edge 100 Amp Alternators by Factory PerformanceTM Parts
A Bold New Look for the Classic GM 10SI
Author
The Auto Builder Staff
Photos Courtesy of Specialty Auto Parts U.S.A., Inc.
Performance-Driven. Style-Focused.
The Slant-Edge Alternator reimagines a legendary design with aggressive, modern styling and precision CNC-machined accents that demand attention. It’s available in seven eye-catching finishes, including Chevy Orange, Black Crinkle, Cast Gray Crinkle, Red, Polished, Chrome, and the sleek and mysterious Liquid Black. No matter your build style—classic restoration or radical pro-touring project—there’s a Slant-Edge finish to match your vision.
But this isn’t just an aesthetic upgrade. Each unit features a bold Chevrolet Bowtie Emblem, available in milled and raised or recessed and painted versions, with the option of red or black finishes to perfectly complement your engine bay.
Built to Perform, Engineered to Impress
Beneath its show-stopping exterior, the Slant-Edge Alternator is a true performer. Every unit is built with 100% brand-new components and comes complete with an internal regulator, internal fan, and a single V-groove pulley. Thanks to its 1-wire hookup, installation is quick and easy—no complicated wiring harnesses or modifications required.
The alternator is factory-tested to ensure it meets rigorous quality standards and is shipped with a unique verification sheet, offering peace of mind that your alternator is ready to deliver high output and low idle drag the moment it’s bolted into place. Whether you’re powering a modern fuel-injected system, an upgraded audio setup, or a full suite of aftermarket accessories, the Slant-Edge has the juice to keep everything running smoothly.
Available Models






Raised, Milled Chevrolet Bowtie Emblem
- 141-146: Black Crinkle
- 141-147: Liquid Black
- 141-151: Polished
- 141-148: Chevy Orange
- 141-149: Cast Gray Crinkle
- 141-150: Red





Recessed & Painted Chevrolet Bowtie Emblem
- 141-152: Black Crinkle with Red Bowtie
- 141-154: Chrome with Black Bowtie
- 141-155: Chrome with Red Bowtie
- 141-153: Cast Gray Crinkle with Black Bowtie
- 141-156: Polished with Black Bowtie
A Statement Piece That Works as Hard as It Looks
The Slant-Edge Alternator is more than just a charging system upgrade—it’s a statement. With bold styling, uncompromising build quality, and serious electrical output, it’s the perfect blend of performance, personality, and precision.
CLICK HERE to learn more or browse the full lineup of parts at Proformparts.com.









