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By Real G8 Owners
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MAINTENANCE & FIXES
Fix problems before they happen
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STOCK/DAILY DRIVER
Reliable upgrades for everday driving
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BOLT-ON BUILDS
Easy power with proven mods
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BOOSTED/TRACK BUILDS
Serious horsepower setups
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Finding parts you need get confusing. Let the Parts Picker take the guess work out of it!
proven by g8 builds, Built by g8 owners.
JASON PARKER – Clarksville, GA
Heads, Cam, Converter N/A Build
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DUSTIN GOMEZ – Kansas City, MS
Heads, Cam, Converter N/A Build
Shop This Build →Want to see your G8 here? Tag us or submit your build.
Why G8Only?
G8Only was built by real Pontiac G8 owners who were tired of generic parts, bad fitment, and guessing what actually works.
So we created a place focused entirely on the G8 — where every product is chosen based on real builds, real installs, and real results.
Our goal is simple:
Help you build your G8 the right way the first time.
No universal junk. No guesswork. Just proven G8 performance.
MEET AXEL
Your G8 Build Assistant
AXEL helps you choose the right parts for your G8 based on your goals and build level — instantly.
✔ No waiting on emails
✔ No guessing
✔ Straight answers from a G8-focused assistant
Online now — ask anything.
Most popular g8 upgrade kits
Proven packages built from real G8 installs
Eliminate GM’s failure-prone DOD system
Wake up your G8’s power curve
Plant the power and tighten handling
Kill wheel hop and drop your PB
