I got the 3.5 pulley because after considering what people were saying here it seemed the best for my case. I'm going to stay mostly stock. I already bought a 180 stat, ac delco 41-932 plugs, which I have in my garage waiting for me, and have already installed a k&N filter. I haven't gutted my airbox, I may some day, but I don't want to at this time. If I do then I'll need to get a better exhaust system like ported manifolds/headers, and such. Otherwise I'll be getting too much KR and too much of a bottleneck. So it'* all or nothing.
As for the tranny cooler. I know everyone reccommends it, but since my car isn't a hot-rod, and I just am uprgading for a little more fun/performance I'm not too sure about it. I hear that if you jump on the freeway on a cold winter day before it'* heated up then I'll have a sluggish tranny. I guess I'm just a bit skeptical that it'* what I need. Aside from the time or two a day I really give it some gas, I don't go hog- wild with it. It'* only ten miles one-way to work so it barely gets hot anyway. sure I cruise here and there on the weekends, but not terribly long distances. Lastly, I'm under warranty and don't want too many mods around in case I need some kind of service related problem. Does this make sense to you or am I way out there to you?