Product Spotlight
When building a high-performance vehicle or performing an LS engine swap, your transmission is just as critical as the engine. The 4L65E transmission from Gearstar offers the perfect balance of strength, reliability, and adaptability—custom-built to handle up to 650 horsepower and tailored to your exact specifications.
For diesel enthusiasts and Power Stroke purists alike, performance and reliability are more than features—they’re expectations. For nearly 15 years, the Adrenaline™ High-Volume High-Pressure Oil Pump from DIESELSITE has been meeting and exceeding those expectations, earning a reputation as a trusted upgrade in the 6.0L Power Stroke community.
When you’re pushing the limits of your 7.3L or 6.0L Powerstroke Diesel—whether you’re running big power or hauling heavy—you’re playing a high-stakes game with your transmission. Heat is your enemy, and stock transmission coolers simply weren’t designed for the kind of loads serious truck owners demand. That’s where DIESELSITE steps in with a battle-ready solution: the 40-Row Transmission Cooler.
In the world of high-performance builds, attention to detail sets great cars apart from the rest. That’s why Factory Performance™ Parts, a division of PROFORM® Parts, has taken a fresh approach to a time-tested workhorse with the launch of the new Slant-Edge 100 Amp Alternators—a stylish, high-output evolution of the iconic GM 10SI. Designed for those who care as much about what’s under the hood as how it looks when the hood is up, the Slant-Edge delivers form and function in equal measure.
Advanced Fuel Dynamics is set to revolutionize the fuel sensor market with their new E-Sense high-flow performance-grade fuel content sensor. This sensor offers a competitively priced, top-tier alternative to the GM/Continental sensor, designed with cutting-edge technology to provide enhanced performance for high-flow fuel systems. It is an essential upgrade for enthusiasts and professionals alike.
If you’ve got a 2020+ GM V8 truck or SUV and you’re not running E85 yet, you’re leaving power and money on the table. Enter the ProFlex DXI—the easiest, fastest, and flat-out smartest way to slap flex fuel capability onto your rig. No tuning, no ECU unlocks, no headaches—just more horsepower and lower fuel costs in about 15 minutes.
When it comes to squeezing every ounce of power and performance out of your ride, the details make the difference. Headers and mufflers might steal the show, but let’s not overlook a serious player in the game: oval exhaust tubing. And if you’re in the know, you’ve probably heard of Stainless Headers Mfg. Inc.—a company we respect for their top-notch craftsmanship and American-made quality.
PRODUCT SPOTLIGHT: Big Block Chevy Round Port Custom Header Build Kit by Stainless Headers MFG. INC.
When it comes to muscle, power, and performance, you can’t beat a big block Chevy. And if you want to harness that raw power, there’s no better way to do it than with a custom set of headers. Enter the Pro Series Big Block Chevy Round Port Custom Header Build Kit from Stainless Headers Mfg. Inc. – the ultimate toolkit for any serious fabricator.
We here at The Auto Builder understand that when it comes to performance, every component counts. That’s why the Canton Racing Products GM LS1/LS6 Front Sump Road Race and Drift Pan has earned a top spot on our must-have list for any serious gearhead looking to elevate their game.
If there’s one thing we can’t stress enough, it’s the importance of keeping your engine cool. That’s why we’re pumped about the Canton Racing Products Universal Aluminum Coolant Expansion Fill Tank. This baby is an absolute game-changer for anyone looking to optimize their vehicle’s cooling system.








