Well as I'm sure most of you who have driven the 1990 blazer know that the 350 motor it came with is a dog. It gets bad gas mileage and has no power. I'm wondering what are some good mods that I can do to increase my power. I've put in 4:10 gears in the back which have helped but I'm looking for more. Everything else is stock. I live in California so mods need to be CARB approved.