how much is a lot of power to you? and what trans, rearend, tire size are you looking at matching it up to? every kid says they want a lot of power.... hell i did too....realize number 1... that even 300 HP can feel like riding a missle if built right..... and number 2... if you really seriously want to built 400;500;600 HP motors, you're going to pay for what you get.... seeing that you're building your first motor, i really wouldn't reccomend starting off with big HP, i'd start off, doing a good solid build.... the more powerful you build the motor, the more likely there is for something to screw up.... lower HP motors tend to be more forgiving