Front brake calliper

[350tasmin]

I am trying to source a front brake calliper for my 84 Tasmin , one of mine has a stuck piston! I have seen various postings that report they are from any Granada MK2. Will a pair from a MK2 2.8 Granada, with vented disks, bolt on without any modifications work fine? Is this something worthwhile to do as an upgrade? I see there is also the Austin Princess 4 pot upgrade, but at present I have not found any available.

If anyone has model /part numbers for new please advise.

Richard 350Tasmin