The 4 State Trucks Blog
Haul of Fame: Equipment Express's "Doc Hollidayâ A 2007 Peterbilt Legacy 379 Built to Legend
Why "Doc Holliday" Earns a Spot in the Haul of Fame
Every now and then, a truck rolls through that stops you dead in your tracks. "Doc Holliday," the custom 2007 Peterbilt Legacy 379 built by Equipment Express out of Caldwell, Texas, is exactly that kind of machine. We're adding this truck to the 4 State Truck’s Haul of Fame for a combination of reasons that are rare to find all in one build: a deeply personal backstory, a flawlessly executed custom theme with old-school looks with modern
…
14th May 2026
How to Quiet Your Cab: Best Noise Reduction Tips
Excess road noise entering your cab space ruins your quality of life on the road. Thankfully, it's an easy fix.
While some big rig cab structures are manufactured using fiberglass, a material which does a decent job at absorbing ambient noise, most are made from aluminum which is highly acoustic.
There are only two ways to solve this: add insulation lining and plush carpet flooring.
The Cab Noise Problem in Semi Trucks
The old-school Class 8 trucks were a notorious combination of a n
…
8th May 2026
Maximizing Storage Capacity with Bawer Tool Boxes
If you need to maximize the storage capacity of your semi truck, adding a new set of Bawer Tool Boxes can do the trick.
The Benefits of Bawer Tool Boxes?
Simply put, you get faster access to your tools, a more secure exterior storage space, cleaner-looking truck layout, and superior weight distribution for storage capacity.
Tool boxes also help keep your sleeper/cab space livable by moving your gear outside of where you work, live, and sleep.
While Bawer boxes can be exceptional on vocational r
…
6th May 2026
Buyer's Guide to Chrome Stack Tops on a Semi Truck
Adding aftermarket chrome exhaust stacks and stack kits lets owner-operators replace worn exhaust parts, upgrade the truck’s exterior aesthetic profile, match the right cab/bracket configuration, and create a cleaner custom look with model-specific fitment.
Critical Takeaways for Owner-Operators
Verify truck year, cab style, bracket count, stack height, diameter, and ID or OD connection before buying.
Use reduced-bottom stacks for a larger chrome look without replacing the full 5-inch low
…
1st May 2026
Buying Bully Dog? 5 Useful Facts About Their Heavy Duty Diesel Performance Parts
Bully Dog prides itself in heavy duty diesel performance parts that boost airflow, exhaust efficiency, turbo responsiveness, and engine monitoring for heavy-duty diesel engines.
Here's who they are, why they stand out, and what parts you should consider getting.
The Bully Dog Backstory
Founded in 1998 in American Falls, Idaho, Bully Dog carved out a niche witin loight-duty diesel performance (pickups) before expanding to the Class 8 big rig niche.
Derive Systems Merger (2014): Bully
…
29th Apr 2026