Sunday Spec

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Sunday Spec Sunday Spec is an automotive customization and performance shop based in Alpharetta, GA.

We specialize in general customization and accessory installs, as well as projects involving powertrain conversions, fabrication, wiring, electronics, and more!

10/14/2026

Can a Duramax sound any better than this? We don’t think so. 😍 🛻 💨

Whether it’s:
Small or large
Diesel or gas
Modern or classic

Sunday Spec has your truck customization, performance, and accessory needs covered!

Our customer’s 1965 Mustang just received a few upgrades to help it look and sound even better than before! We completed...
10/12/2026

Our customer’s 1965 Mustang just received a few upgrades to help it look and sound even better than before!

We completed the install of a Scott Drake hood pin kit, as well as upgraded the exhaust system by replacing the old Flowmaster mufflers with a pair of Borla Performance XR-1 mufflers, as well as installed a pair of polished 3.5” twin tips to give it a more modern look at the rear.

Let Sunday Spec be your choice for the performance parts and installation on your next automotive project!

10/08/2026

Did you know that Sunday Spec modifies, modernizes, and services muscle cars and other classic vehicles?

This 1968 Chevelle SS is in the final stages of its build with us after we added not only more performance but greatly improved drivability and overall quality of life for the owner.

Modifications included:
• New camshaft, valvetrain components, and carburetor
• New longtube headers and full exhaust system
• UMI Performance Inc. suspension system
• Classic Performance Products power disc brake conversion
• CPP power steering conversion
• Vintage Air air conditioning system
• New retro head unit and speaker
• Tons of new trim, grille, and other body components from ss396.com
And more!

Let Sunday Spec be your home for upgrades and customization for your enthusiast vehicle whether new or old!

Sunday Spec
📍 1360 Union Hill Rd, Suite 3E, Alpharetta, GA
☎️ 678-835-3890
📧 [email protected]

We've been nominated for the award in the Aftermarket Automotive category!Voting is now open through 10/31 at the link ...
10/07/2026

We've been nominated for the award in the Aftermarket Automotive category!

Voting is now open through 10/31 at the link in the comments. We're proud to call Forsyth County home, and to serve our local automotive community with world-class products and services!

10/05/2026

Last week we installed this Rough Country power retractable running board system on our customer’s 2023 Ford Bronco. The owner was seeking a lower step height to make entry/exit easier while also looking to clean up the aesthetics compared to the basic OEM fixed running boards. This kit solved their needs and even included a bonus feature of puddle lights to help illuminate the steps when using the vehicle at night.

Let Sunday Spec help you on your next accessory install for your car, truck, or SUV! Contact our team today for pricing and availability.

📞 678-835-3890
📧 [email protected]

Address

1360 Union Hill Rd, Suite 3E
Alpharetta, GA
30004

Opening Hours

Tuesday 9am - 4pm
Wednesday 9am - 4pm
Thursday 9am - 4pm
Friday 9am - 4pm
Saturday 9am - 12pm

Telephone

+16788353890

Website

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