project XK8 ? brake calipers

[foggylad69]

Hope I can get some info on some rear calipers I bought off fleabay, Im led to believe they are off a XK8
and are for an 18 mm wide rear disc. What I need to know is if the same caliper is made to take a 30 mm disc that would suit front discs. I plan on either sourcing these or fitting spacers to the rears I have, to go on the front of my project.
Calipers are Brembo 4 pots.

[foggylad69]

[foggylad69]

[foggylad69]

Is this caliper available to take a 30mm thick disk
Are Pins and anti rattle plate available to fit if Im using 30mm thick disk with spaced out caliper ?????
any info at all would be a starter
cheers