I have to pull the gearbox to change out the clutch and get the flywheel resurfaced. I was wondering about lightening the stock flywheel.I don't want to go to the expense of installing an aluminum flywheel and I do know a machinist that would do it for a reasonable price. I was wondering if anyone had any information as to where to drill the flywheel and how much to take off etc. How would a lightened flywheel affect performance and what would I have to adjust in terms of retuning the engine?My 3 has a rebuilt motor, Petronix,a header,mild street cam,stock SU's,4A intake. Is doing this worth the effort or am I wasting my time for a small gain in performance?