23 tooth question....
with my 3.73s, when i put in the 23 tooth speedo gear, how close will my speedo be? Right on or off by how much? The car had stock 2.73s. has 5-speed T-45.
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1996 Mustang GTS
K&N, removed air silencer, 3.73s, turndowns after H-pipe (no mufflers)
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