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AFTER-CAT INSTALL
The white ’99 Silverado was beginning to show the wear and tear of fighting the highway wars the last few years. The once proud and pampered show truck—a standard cab shortbed with matching cab-high camper shell—hadn’t spent much time in daily service until recent years, but now it bore its share of dings, dents and scratches. It was obvious that the 50,000 miles on the odometer hadn’t done the 5.3-liter V-8 much good. Part of the reason for the dissipated performance was the exhaust system, a very tired, less-than-top-quality aftermarket after-cat that had started banging, squeaking and leaking.
Installing a new after-cat from MagnaFlow was at the top of this owner’s agenda. He acquired a MagnaFlow (part No. 15617) polished stainless steel after-cat performance system for his Chevy, and because he’s in the automotive business and has a lift at his own facility, all he had to do was enlist the help of a colleague experienced in exhaust system installs to lend a hand with the hookup.

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PRODUCT SPOTLIGHT: Intellitronix 1967-72 Chevy Truck Analog Direct Fit Gauge Panel
Don’t let your dash live in the past. Bring it into the now.
Author
The Auto Builder staff
Photos Courtesy of Intellitronix
Show-Stopping Design
This panel looks as good as it reads. Made from black polycarbonate with a slick brush-stroke finish, it turns your dash into the centerpiece of the cabin. Every gauge—speedo, tach, fuel, volts, oil, water temp—is dialed in for accuracy and legibility. Turn signal and high-beam indicators? Seamless. Automatic nighttime dimming? Yup, so you’re never squinting or distracted while driving.
Tech That Impresses
Intellitronix didn’t just make it pretty—they loaded it with features that make your truck smarter than most new rides. The speedometer hits 160 MPH and includes one-button calibration, odometer, trip meter, high-speed recall, 0–60 timer, and even ¼-mile tracking. Tachometer? 0–8000 RPM in 100 RPM increments. Volts? 10–18. Oil? 0–100 PSI. Water temp? 100–260°F. Fuel gauge? Programmable for Ford, GM, Chrysler, VDO, and aftermarket senders. Basically, it’s like strapping a miniature command center onto your dash.
Easy Install, No Drama
Intallation is idiot-proof. Comes with sending units, hardware, clear plexiglass, and step-by-step instructions. Works with both mechanical and electronic transmissions. Want pinpoint speed accuracy? Add the optional Intellitronix GPS Speedometer Sender—never worry about tire size, gear ratios, or transmission type throwing you off.
Precision Meets Style
Whether you’re hitting a car show or just tooling down Main Street, this gauge panel turns your truck into a cockpit that screams “I mean business.” Lifetime warranty, killer performance, and looks that get noticed—this is the upgrade Chevy truck owners have been waiting for.
Features at a Glance:
- Full Analog Gauge Suite: Speedometer, Tachometer, Fuel, Volts, Oil Pressure, Water Temp, Clock
- Turn Signal & High-Beam Indicators
- Automatic Nighttime Dimming
- Works with Mechanical & Electronic Transmissions
- Optional GPS Speedometer Sender for Pinpoint Accuracy
- Includes Sending Units, Hardware, Plexiglass & Instructions
- Lifetime Warranty
Upgrade Your Dash—Bring Your Chevy Into the Now
It’s time to give your 1967-72 Chevy Truck the ultimate interior makeover. Install the Intellitronix Analog Gauge Panel and get the perfect mix of vintage style, modern precision, and SEMA award-winning performance. Your dash will thank you every time you hit the road.








