3400 sfi. once i figure out how to update my sig i will copy and paste mine from the impala forum lol... too lazy to retype it.
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2004 3400 - CAI, zzp 2.5in dp, 06 ss 2.5in catback, overkill pcm, SSC springs on AGX struts, GMPP Handling Kit, Kenwood/Focal/Infinity/Polk Sound System
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