Had the car a long time ago.... If I remeber correctly I used stock passenger car mounts on the block and fabricated the mounts on the crossmember. Sorry, my '57 was a lot of years and projects back. A '66 Galaxie donated a buch of parts for the swap.....Think I built the car in the mid 70's, my memory is having a good day if I can remember what I had for lunch !!!!!