i know that v8s are so different from a 4g63 but what i see alot is a billet aluminum under drive crank pulley on the v8s, so i want to know why cant you put the same ones on the 4g63 ( OBX BILLET CRANK PULLEY ECLIPSE TALON GST GSX 4G63 SILV : eBay Motors (item 390185127369 end time Apr-26-10 12:50:20 PDT) ) because if the stock one doesn't have fluid, why wouldn't the ebay one be the same as the stock ones???