Search is going to be your best friend on here. Research what people are doing to their cars, the succes or failure they are having with the said mods, and why this succes or failure is occuring.
You have a lot to learn on here from what I've gathered based on your goals for you car. These are not JZ series engines, they make easy horsepower UP TO A POINT. After that you are looking at having deep pockets to afford the extra power, and the knowledge to make this power work without breaking the engine and starting over from scratch.
Best of luck to you
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