The whole package!
You need to think about your car as a whole unit, not just the motor. If you try to build a high HP motor and you do not address the transmission, chassie or the rearend you will have your self a big head ache. I would be willing to help you in the right direction. You need to think about how fast you can afford to go and for how long. PM me.
Mark
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STS Power Dealer
www.pcstreetcars.com