Hey guys, So in my old 47 Buick, VS Commodore (holden) springs fit straight in and dropped it low. I'm in the midst of scoring a 46 Olds and thinking maybe I can do the same trick? I heard in a video that Chev, Pontiac and Buick share the same ch***is but no mention of olds or Cadillac. Cadillac doesn't seem surprising to be of a different ch***is but what about olds? Are they similar or same or a totally different beast? Cheers!