Sunday Spec was founded by David Crunkleton and Sean Parker, two automotive enthusiasts who have spent much of their careers working in the aftermarket automotive industry. 

Both got their start in automotive shops while attending college, eventually crossing paths at Vengeance Racing where David oversaw all sales, marketing, and purchasing activities, while Sean honed in his technical expertise working on everything from everyday performance upgrades to high-horsepower street and race applications.

Their careers later took them through companies including National Speed, Roush, Roadster Shop, and GA Jeep Tech, gaining experience across performance parts, vehicle customization, product development, and complex specialty builds.

After years of working throughout the industry, they started Sunday Spec with a straightforward idea: bring quality parts, real-world technical knowledge, and professional installation together under one roof.

Today, Sunday Spec serves customers across the country through its parts and accessories business, while its Alpharetta facility handles installations and custom projects for enthusiasts throughout the region and beyond.