^ absolutely... u seem like you DEFINATELY need springs/shocks/tires ... unless those were just not included... they will make a huge difference in the feel of ur car... if u were asking about just engine mods... now is the time that you have to decide between N/A (Naturally aspirated) or FI (forced induction) ... did u wanna build the motor to shit... or turbo it... your options are stuck at those 2.... make ur decision... research on pros and cons of each and get back to us