What is your birth month/day aaaaaaand......S

what auto related thing matches that number (Porsche 9/11, 4/27 Cobra Jet, 2/12 MPH)? Kinda like yesterday but instead of birth times, it's birthdays. Let's work out our minds a bit, good luck :]

All I could find is this gaint Fiat 527. It either came with a 52 or 60 HP 2516 cc straight 6