Hi, I´m trying to make a list of all impreza wrc ever built, first I want to know how many cars and their register plates exists and then I will try to find the current owners and make the history of each car.

03001 ?
03002 S20 WRT
03003 S30 WRT
03004 S40 WRT
03005 S50 WRT
03006 S60 WRT
03007 S70 WRT
03008 S80 WRT
03009 S90 WRT
03010 S100 WRT
03011 S200 WRT
03012 S300 WRT
03014 S400 WRT
03015 S500 WRT
03016 S600 WRT
03017 S700 WRT
03018 S800 WRT
04001 ?
04002 ST53 SRT
04003 OT53 SRT
04004 CT53 SRT
04005 NT53 SRT
04006 LT53 SRT
04007 JT53 SRT
04008 555 WRC
04009 YT53 SRT
04010 MT53 SRT
04011 AT53 SRT
04012 RT53 SRT

In this list are the 03 and 04 versions and I´m trying to discover the plates from 03001 and 04001 . Any help?