I was going to say, I thought that PD140's had 288mm discs.... but then again, it is a bit of a lottery what's fitted !!
I've got the 312's sat in my garage from a Mk5 Golf that I need to fit..... I've got 2 options:
1. Just fit the discs/carriers, and have red carriers with grey callipers (no brake fluid bleeding required)
2. Just both carriers and callipers from the Golf, and have nice red brakes all over (full brake fluid bleed/change required)
Hmmm.... choices !!! Mind you, I do need to do a brake fluid change anyway !