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Compare the 5 best headers for the 2009-2018 Ram 1500 5.7L Hemi: shorty vs long-tube, real hp gains, CARB-legal picks...

Compare the 5 best 4-inch and 6-inch lift kits for the 1983-1997 Ford Ranger 4x4 from Skyjacker and Tuff Country. Spe...

Compare the best front sway bars and handling upgrades for the 2003-2009 Toyota 4Runner & Lexus GX470. Real specs...

Best throttle body upgrades for 87-96 Ford F-150 and Bronco 5.0/5.8L: BBK 56mm vs 61mm for +10-12 HP, plus intake and...

Compare the best Jeep Wrangler JK/JL subwoofer enclosures: down-fire 2x12, wheel-well, and loaded kits from $366. Spe...

Compare the best LS1 cold air intakes for 1998-2002 Camaro Z28, SS and Firebird. Dyno gains, CARB-legal picks, oiled ...

Compare the best 10R80 transmission upgrades for the 2018+ Mustang GT: billet torque converters, a 1,000-hp clutch ki...

Compare the 5 best subwoofers and audio upgrades for the 2020-2026 Jeep Gladiator JT - DS18 underseat boxes, soundbar...

Jeep TJ sound bar upgrade guide for 1997-2006 Wrangler TJ. Compare the DS18 6-speaker soundbar, 6.5in & 4in coaxi...

Upgrade your 2021-2025 Ford Bronco audio with DS18 subwoofers, sound bars, and door pods. Compare 6 bolt-in kits with...

Compare the 5 best 68RFE transmission upgrades for 2007-2018 Ram 2500/3500 Cummins, from $410 valve bodies to a 700hp...

Best sway bars for the 2003-2009 Toyota 4Runner and Lexus GX470. Compare Whiteline's 30mm adjustable bar, HD links an...