Rockabilly players are mostly playing modern King basses heavily constructed to withstand having the guitar player etc stand on them and fitted with special pickups etc.
Their website is gone though their MySpace page is still up at
Link Removed
Read about their demise here:
http://www.talkbass.com/forum/showthread.php?t=512924
Jake mentions the "modern" King basses that ARE definately marketed towards the heavy handed rockabilly players (no dissing of rockabilly, I love it, but it is physical). I became aware of these basses a few years ago, through posts I read here on Talkbass.
Now, to my point. My son, Aaron, bought a mid-50's King Moretone near Columbus, OH, during the summer of 2007 or 2008. A killer sounding bass, but....
....it had been primered and painted black with some fairly wide, white painted-on purfling. So, evidently, some rockabilly player had modified the appearance to his/her preferences. It's in the process of being stripped and refinished, back to a nearer representation of it's original state.
So, maybe there IS some preference of a KING bass within the rockabilly community. I tell you, if the first rockabilly bass cat had a King bass that sounded as good as this one, AFTER is had been painted, we may have a piece of evidence as to why the modern "King" basses attached that same name to their newer products. This one sounds bigger and deeper than it's 2 first cousins, the bigger bodied American Standards, that I own.