Thread: 3.9 upgrade worth it, dedicated track car?
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Old 01-05-2017, 06:32 PM   #1 (permalink)
Mike
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Default 3.9 upgrade worth it, dedicated track car?
My car is in the shop right now getting transmission and a new Tomei LSD. Its pretty expensive as it is with just this right now. Will the extra 1000 or so for a 3.9 upgrade be worth it? How about effects on SRM. Any track guys with info
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