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1. lose a 100 pounds off car
2. set of drag radials
3. under drive pulleys
4. 4 gallons of gas when you race
5. 3:73 gears
6. 80 mm mass
7. 185 'stat
8. lighter wheels as stated before
9. relocate battery to the right rear
10. 13's
well i have a 89 mustang lx 5.0 automatic and i have full length mac headers, Mac off road H-pipe, and flowmaster catback and 373's with k&N filter and 9mm spark plug wires and im in the 13.8's