Since there was a recent discussion about the Centipede Oxrun books, I thought I start with those. I have a matching set of them -#14.
https://image.ibb.co/cd763y/oxrun_set.jpg
https://image.ibb.co/ds7vwJ/Oxrun_14.jpg
https://image.ibb.co/n1jawJ/sound_14.jpg
I did request the matching Nestling when I ordered from Centipede, but did not get my number. And to further driver number completists crazy - it is possible to get a matching Roman numeral XX or under. I haven't found XIV yet, but got pretty darn close!
https://image.ibb.co/ehMoGJ/nestlings.jpg
https://image.ibb.co/d1S63y/nestling_55.jpg
https://image.ibb.co/kbftiy/nestling_xiii.jpg