Congratulations on your new purchase. Sounds like you found a good one with only 20K miles! There should be an SVT "Supplemental" book along with your regular owners manual for your car. That book contains Cobra-specific information on the engine, transmission, and also some performance specs.
97snakedriver mentioned gears. I recently installed 3.73s in mine and I love them! It really gives the feeling of more torque down low. I am glad I did not go with the 4.10s though. I think they may be a little too deep for daily driving, and first gear would be almost useless.
Good Luck!
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'97 Cobra, K&N, 3.73s, Rio Red
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