Hi Ben,
The calipers in the photo are for the 260mm front brakes, not the larger 280mm front brakes.
Manufacturer caliper numbers for the larger calipers are LCA333 & RCA333. You can use eBay to get the oem numbers from them.
Basically the calipers are the same for the mg zs180, mg zr160 & accord of that era, but the carriers differ i believe (ive not checked any fit on an mb other than a zs).
I can confirm that the calipers and carriers from the zs180 will fit onto a mb2 4x100 as thats what I'm currently running! If youre upgrading the brakes you'll need to change the master cylinder and prop valve if you don't have abs for it to work properly.
My setup is:
Honda Civic MB6 brake master cylinder
Honda Civic MB6 brake servo
Honda 40/40 brake prop valve (46210-S5A-912)
Wezmoto Braided front and rear brake lines (700mm front / 560mm rear)
MG ZS 180 Front & Rear brake calipers
MG ZS 180 Front & Rear brake discs
Cheers, Dan