| SOMBOY'S 03 SILVERADO |
| 6.0L LS HEADS Ported Vs. Stock |
| Close Up Of The Exhaust... Big Difference! |
| Little Work On The Valves Goes A Long Way! |
| Exhaust Intake |
| Ported Stock |
| Close Up Of The Intake... Big Difference! |
| Ported Stock |
| Ported Stock |
| Ported Heads & New Rockers Installed |
| Stealth Mode! |
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