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About Us


Code 504 is a designer of made in the USA, high quality bolt-on S-10 chassis conversion kits and street rod parts.  While we sell many products from various manufacturers, all products produced by Code 504 are proudly manufactured in Seward, NE.

We are the World's Trusted Supplier and Innovator of Bolt-On S-10 Chassis Conversion Kits and Accessories.

Our mission is to make street rodding a fun and enjoyable experience for anyone who has the passion to build the project of their dreams.  Our skilled team has over 300 years of combined experience building street rods, muscle cars, and classic trucks.  Coupled with our 12+ years of participation in NASCAR and support of the NSRA since its infancy in 1970, we're able to offer well rounded, unmatched knowledge and small town service that we strongly believe all of our customers deserve. 

If you're passing through or near Seward, NE, feel free to swing by our showroom and say hello.  Otherwise, we're always happy to offer our first hand experience to answer your questions by giving us a call at 402.643.0504 or emailing us at

We look forward to hearing from you!

-The 504 Crew