If you are wondering whether to go with these or some re-manufactured calipers elsewhere, save yourself the trouble and just buy these.
I made the mistake of buying another brand's set of calipers that were re-manufactured from another vendor, did the full install and thought I was good to go. Boy was I wrong. That night all of my bleeder valves started to leak, even though they were torqued to FSM spec and one of the calipers had a fatal defect. I asked for a refund and bought these instead.
The fit and finish of these are head and shoulders above the previous ones I had. The seams, powder coating, threads, valves, just about everything is substantially elevated in quality.
If you are upgrading your base model's brakes to monoblock or having the replace your Akebono's for some reason, there is no other option than these in my book.
Fantastic work Team Z1!