Obviously he likes the (neo)rockabilly side of things with Boz and Alain (who was with Gary in the Gazmen too).
Spencer to a lesser degree had links with psycho/rockabilly bands as he started out (not in later life).
That said, Gary Day is his real link to that world.
Gary's been in some great bands: The Sharks, The Frantic Flintstones, The Nitros... He's slightly less psycho and a bit more rockabilly these days, but of all his band members - Gary is most linked with the genre.