Jay has a 66 7 litre, One of his shows featured it, & he had his buddy hotchkis build him custom suspension parts for it. i'ld guess since they had the patterns, they thought they might as well sell them. seems jay's dad had one when jay was growing up, hence his love for one. there's a pic of it right on hotchkis' display add. got to be a you tube video of it somewhere.