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I/H/E will give about 10hp, pulleys maybe 3hp, flywheel helps with the rotational mass of your engine so it only helps your car accelerate faster, fpr isn't going to help much since there are no major mods... cam gears for an ls/gs/rs teg will help as long as you get them tuned at a dyno. look to purchase a set of cams also to help out the cam gears. cam gears are easy to install if you know what you're doing. i recomend having theminstalled by a shop.
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