I know this has probably been covered many times ,but can I purchase and original General Motors Holden body ID plate blank . As most long term members will know I have a Holden built 48-51 L Model Vauxhall Caleche which has for many years run a series 1 V6 with auto and is registered through the ASRF. During Covid lockdown like many others I spent many hours thinking and working on my cars . I have decided to go for a more drivable set up with a more vintage [more original ] appearance . I am now running a 2.6 Mazda Bravo engine and 5 speed with a 308 diff on high profile 14" . I am now considering maybe leaving the ASRF and would like to remake the Holden ID plate as the original has 3 drill holes in it . I don't think they are original . Also does anybody know where I can find information not in the workshop manual as to why these holes are in Style .....and Top..... . Just thought that may not be an accident when plating a convertible .