Part number for 23.8mm master cylinder
 

Hello Saxo enthusiasts!

I'm looking for OEM part number for 23,8mm brake master cylinder (2-port) to upgrade the standard 22,2mm (OEM p/n = 4601 F3) master cylinder.
The vehicle is LHD 1999 Saxo 1.6 16V VTS with ABS.
I'd rather take completely suitable option, which has equal outlet ports as
the original cylinder to fit both original brake lines.

The front brakes are already with a bit bigger dia. ZX calipers and discs upgraded, though the rear has been kept almost original (grooved discs).
Anyway, the brake pedal travel could be a bit shorter, which is the reason for this parts technical request.

Please inform the OEM spare part number of suitable Citroen/Peugeot master
cylinder to fit the original 225mm servo unit (OEM p/n = 4535 F9)

Cheers from Finland
Harri