I hope I'm not asking one of those type of questions: "Which is the best type of motor-oil to use?". I have a 98 V6 Mustang 5-speed manual. I am concidering purchasing and installing one of these two kits (Cold or Ram Air Induction). I was wondering which I would benifit more from? It's basically a stock engine, except for a few free and simple mods. Also, I am considering changing to a lower tempature Thermostat from stock. What is the temp of the stock stat and to what lower temp. stat should I replace it with? I may also be installing underdrive pulleys. With the aforementioned mods that I'm considering, what would be the better setup overall? Thanks, Sam http://groups.yahoo.com/group/4and6cylindermustangs/files/sam_stang.jpg