$399.00
These have LS1 plugs and tune data. These are new and come with a 3 year...
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TSP 408 C.I.D. LQ9 Long-Block#25-TSP408LBRacing Use Only, Not Legal for Road Use GEN IV BLOCKS...
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25-TSP408SBRacing Use Only, Not Legal for Road Use GEN IV BLOCKS AVAILABLEGEN III BLOCKS OUT...
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#25-TSP421LBRacing Use Only, Not Legal for Road Us All Texas Speed & Performance 421 C.I.D....
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#25-TSP421SBRacing Use Only, Not Legal for Road Use All Texas Speed & Performance 418/421 C.I.D....