another vote for underdrive pulleys, one of the best bang for the bucks. sure it is hard to tell from the seat of the pants dyno, but it all adds up. 10 for pulleys, a few for advanced timing, a few for removing air intake silencer, k&n,...... sure if you take one off you will probably never notice, but when you add them all together what a difference, and for the price you can't beat them. when my alternator crapped out i converted to a 130 amp, but before i never had any real problems unless like said earlier i ran my ac wide open at night at idle along with the rear defroster, stereo, and so on. I guess it just depends on your desire for your car