I agree with what was said above, go for the pulleys, if you have any problems, take them off. I had them on my '87 and I never had any problems. Also keep the A/C, I made the mistake of taking it off a long time ago while it was still working and have regreted ever since. Instead of getting rid of the A/C, ditch the smog pump. Another easy mod you could do is an electric fan, it frees up a little power. I did the pulleys and fan the same time on my car and it made it rev up faster and I did notice a little difference in performance, also it can increase gas mileage, although it didn't in my case. Also an aluminum driveshaft may free up a little power and replace old u joints at the same time and take away any high vibrations with the gears. Just a few suggestions off the top of my head, hope it helps.