273 to 383 swap

Jim i was paying attention, but i needed to know why they wouldn't work. anyway i went to sleep last night with two facts in my head, 1. yours that the A mounts are different, and 2. mine that i had an A body k frame on the floor that the 383 would definately bolt to. well at 2:30 in the morning the light came on, i was thinking that the mounts that Chrysler, and then Schumacher made were to get manifold-p.s clearances, then it dawned on me that this was the first time that a 727 had gone into an A body, prior it was always a 904. so obviously the A body 383 mounts set the 383 ahead, lower or both to allow the room for the 727 or larger bell housing in the transmission tunnel. i now know that the Schumacher or Transadapt mounts do this, which was my original question, and therefore i must thank you Jim for kicking my brain back into gear. Thanks Gerry