Reinstall Quadra 605

[b wick]

I am trying to reinstall OS 7.5.3 on my old Quadra 605.  I downloaded the files from Apples site but I am no longer able to mount the .smi files in 10.6 to create floppies via dd of the .image files contained within.  Does anyone have the .image files for OS 7.5.3???  Your help would be greatly appreciated. 

 

Thanks!