Has any one ever used the Turbo 350 side mounts for 55-57 pass cars? They work excellent in those cars, so I eyeballed them up in my 53. They looked like they would work perfect, all you'd have to do is drill holes in the crossmember(you cut the center section out of it and weld it back in 2" lower.Then all you'd need is the 57 front mount system and a simple cross member.You wouldn't need the trany mount then because you have a side/front mount system.