None if you're goals are 450 rwhp. If you want more hp then you'll need upgraded rods. But you can get to 400 hp a lot less expensive, like Blind said, with a pulley, plugs,tune and cold air intake.Originally Posted by Rob1211
Your comment implies you are more mature than most 19 year olds.
When I decided to buy an HD truck I read every thread in the forum. You may not have enough time for that. But read as much as you can. Then determine what your goals and budget are. We can't tell you what to do unless you decide those things first. Then ask, we will give you good advice.
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