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Urgent Reply, IRS QUESTION!
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07-04-2007, 05:58 AM
fostereast
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Join Date: May 2004
Cobra Make, Engine: TBD, other is 67 Mustang GTA 390 Convertible w/air,
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Gear ratio on IRS
The 2.73 is a good candidate for a Richmond 5 speed. If you go through the calcs you'll see you can get a braod range of compromise for road racing, streetability and 1/4 mile track.
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