I orderd a 11lb flywheel for my ka24de and I was thinking about adding a carbon fiber drive shaft, but was thinking it might make my rpm's drop too quickly when letting off the throttle or will the drive shaft not affect it as much as the flywheel will. if those 2 together will be fine will adding alight crank pulley over do it on top of those? thanks guys. Ive got full 3" exhaust, the cold air and headers which will be usles when I turbo but was cheap anyways. I also have the ac out of the car. I wanted to see how the car would perform with every bolt on you could do before turbo. I just started making money again so the drive shaft is really the last thing Im going to buy then turbo.