How to Remove Sunscreen From Leather Car Seats (And When to Just Recolor Them)
Sunscreen stains on leather seats are stubborn but fixable. Here’s how to lift them before they set — and what to do when the damage is already done.
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RX-8 Rear Window Visor: What Fits and What Doesn’t
Direct bolt-on rear windshield visors for the Mazda RX-8 don’t exist, but options do. Here’s what fits the RX-8’s sloped roofline and how to make it work.
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RX-8 Rear Window Visor: What Fits, How to Install It, and What to Expect
A rear window visor for the Mazda RX-8 does exist. Here’s what fits, how the install works, and how it compares to side window visors.
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2015–2017 Front End on a 2014 Dodge Charger: The Full Conversion Guide
Fitting the 2015–2017 Dodge Charger front end on a ’14 is possible — the bolt holes line up — but it’s a full front clip swap, not just a bumper change. Here’s the complete parts list.
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2016–2017 Front End Swap on a 2014–2015 Silverado 1500: What It Actually Takes
The K2XX platform makes a 2016–2017 front end fit a 2014–2015 Silverado 1500 — but it’s more than a bumper swap. Full parts list and wiring guide inside.
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RX-8 Rear Window Visor: Every Fitment Option and What You Need to Know
Rear window visors do exist for the Mazda RX-8, but the car’s fastback roofline means fitment is everything. Here’s what actually works and what to avoid.
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OpenFOAM for Car Aero: How to Find Models and Get a Simulation Running
Getting a car into OpenFOAM is mostly a geometry problem — here’s where to find models, how to clean them, and what to realistically expect from desktop CFD.
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OpenFOAM for DIY Car Aerodynamics: Finding Models and Running Your First CFD Simulation
Getting OpenFOAM running for car aero doesn’t require a fluid dynamics degree. Here’s how to source usable 3D models and set up a basic external flow simulation from scratch.
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Alumalite vs AlumaCorr: What Racers Need to Know Before Ordering Splitter Material
Alumalite and AlumaCorr look nearly identical at the sign shop, but they come from different manufacturers with real differences in thickness, weight, and rigidity. Here’s the practical breakdown.
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Lighted Door Sills for Trucks and SUVs: OEM, Aftermarket, and Everything In Between
From Nissan Frontier OEM PRO-4X kick plates to battery-powered Putco Luminix units, a complete guide to illuminated door sills for trucks and SUVs.