what kind of horsepower can i get

If you're running that much HP on a stock F2T motor, you can kiss the stock rods and pistons goodbye after a very short while. While the rest of the motor can handle it just fine, the rods and pistons are the weak parts of the F2T. Put some nice forged ones in, maybe balance the bottom end, and you'd be in business for up to around 250, possibly more.

i have been looking around on PT and theres some guys running almost 300 hp on mostly stock engines......