The rear sway bar will make the car handle tons better. It is really like night and day. Just order the progress rear sway bar from either road race motorsports or anywhere else that carries it. It is adjustable, but trust me you want it on the stiffer setting. That is just the right setting. It balances out your suspension from front to back so you have a more nuetral drive bias, it will eliminate alot of your underdrive and give you better feel in the corners. Trust me it is worth every dime and then some. I know how you feel with the motor mounts, it seems like a lot, but if you are going to make big power you need them. It will help alot with wheel hop, but also it will keep you from breaking the motor or the stock motor mounts. I have heard of people slamming the TB rotor back into the firewall becuase the motor had to much power and it rocked to much. As for LSD/Clutch/Flywheel, replacing the flywheel will make it alot lighter, then you loose less power because you aren't trying to push through the heavy flywheel. It will put more of your power to the wheels rather than loosing it in the rotational inertia of spinning the heavy flywheel. The LSD makes it so that they power given to the tranny is sent to both wheels rather than one. With an open differential like the stock one on the tib, it is just going to spin one wheel or the other, once the one wheel starts spinning it will just keep spinning. With a Limited Slip Differential(LSD) it will "feel" or "see" when one wheel is slipping and will transfer power from the slipping wheel to the one that has grip. There are many different types of LSDs, some viscous, come clutch type, several different, but they work under similar theory, move the power back and forth between the wheels to make sure the power is going to the wheel with traction rather than just spinning the wheel without. Also it will give you better feel in the corners when you are accelerating through corners, and it help eliminate alot of the torque steer.