top axial mount -2 piece caliper -964's -caliper 'lugs'
bottom left radial mount 2 piece -993's -note radial but 4 bolts
bottom right radial mount mono blocks 996's - no bolts hlding them together
the idea of using radial mounts, is if you have stock lugs , you can easily get to the radial caliper, using a 90 degree adaptor
-also the disc position isn't a factor
-ie
you use a hub and disc on a spindle, andyou can make the caliper fit by modifying the adaptor, in the in and out plane, use ful if for example you have a 964 disc, with an overall height of 80mm from hub face to edge of disc
-and you then fit a disc with a 'hat' or total depth of 76mm
-you can simply minus the 4 mm on the radial mount adaptor