I have found a set of brake pads which, with a small amount of grinding, should seat very nicely in the front calipers. As can be seen in the first image, the pad is fractionally too long but by machining the tang and lower shoulder back 3mm @ both ends it should seat correctly. The pad (brand 'X') is common, and you should be able to source it from just about anywhere in varying degrees of quality.
The rotor is in fact a DB4963. SK has previously identified this rotor as the one to use with a small amount of machining (6mm) from the diameter. A trial fitment today showed the rotor did fit, with caliper in position and no machining was done. However it is a close fit and until testing has been completed no comment or recommendations can or will be made. (SK if you are reading this - machining may still be required).
The only issue noted to date is that the DB4963 does sit in a little further than the original rotor and may foul on the caliper. There is only about 3.5mm difference between the two caliper dimensions. Once the pad modification has been completed and fitted I will review the rotor/caliper clearance.
I would like to have this completed before end of month. If not, then end of financial year stocktakes, accounts etc will take priiority.
As soon as any further developments have been made I will post it up.