I am new to this hobby, so sorry if I ask something you might consider obvious..

Anyway, time to mark my GMC. I'm gonna order the paint masks from Rick Larsen and would like to ask if someone can tell me the correct size (height in inches) for the following:
Front unit markings.
Rear unit markings.
Caution Left hand drive and Max Speed 30 Mph
Stars on front bumber, back of cargo bed and rear skid.
I have also seen some pictures og GMC's with stenicilling on the gasoline tank. Was this common and what did it say?
I found the old vehicle number on the hood and the star there, plus the stars on the side of the cab. That made my day.

Any help will be greatly appreciated.
Tom V.G.Nilsen
Drammen, Norway