SCCA rules state 8" numbers and 4" letters.
Also our doors are aluminum so don't expect magnets to stick. Reuseable vinyl works well though.
I've always had good luck getting my numbers from SPS Performance.
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'11 370Z Nismo #528 Fast Intentions | Stillen | Motordyne | Uprev | CSF | Zspeed | Z1 Motorsports | AST | Swift | SPC | SPL | Whiteline | Hotchkis | Bride | Schroth | Robispec | Cusco | Nismo | Volk | Forgestar | Hoosier | RJM
'17 Titan Bone Stock
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