You will get a CEL.....that will unltimately slow down your car. Also the head on the pre 98 is different than the 98+ other than the VCT....like timing belt pulley placement.
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