Blazer Horsepower upgrades

I currently have the 1999 chevrolet blazer LS with the 4.3 liter v6 and i want to do some upgrades to it. I dont want to spend a lot of money and i reall dont want too much tear down... i was thinking throttle body spacer and air intake....any suggestions?

Yes, read the "Performance" link above, especially the "Modifications that do work" thread.