plenty of exercise and a sensible diet.........
try getting rid of everything you dont want or need. removing a/c pump, lines, and so on can save weight and add power. you can also remove the passenger seat (and put it back in when you go on dates) this should save about 30 lbs. if its leather, it would be more. but you can go further than that and take the carpet and padding out and save more weight that way.