Car Enthusiast Puzzle 2

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Across
  1. 1. Leaded fuel additive
  2. 8. "Papa" Porsche
  3. 11. "Island' Packard
  4. 14. BMW tuner
  5. 15. Distance between front wheels
  6. 17. Pebble Beach event
  7. 19. ______ Maglia
  8. 20. Porsche tuner
  9. 21. Shifter pattern
  10. 22. '32 Ford Coupe
  11. 23. California beach Chevy
  12. 24. First with pop-up headlights
  13. 25. ______ Steamer
  14. 27. High-end brakes
  15. 28. Racer Nuvolari
Down
  1. 2. "Air" EV maker
  2. 3. Warning device
  3. 4. Sandy rally
  4. 5. ______ Peak Hill Climb
  5. 6. Sonnet maker
  6. 7. Registry Car Guide
  7. 9. "Breakout" Ford
  8. 10. Ferrari 246 GT
  9. 12. New option in 1929
  10. 13. 60's land speed record holder
  11. 16. Bad luck at Indy
  12. 18. Braking procedure
  13. 21. 300SL Doors
  14. 26. Manifold passageway