Well I don't think weight matters too much. I just put the 14" steelies instead of the 16" E1s and the acceleration is quicker (feel)... and I know the steelies weigh more than the E1s.
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ