I have a pair of (Girling) front G60 calipers, carriers and discs. I'm halfway through refurbing them and need new piston seals. I've been told the VR6 piston is the same size, but I've read different. I want to buy the seal kit on Ebay, but all they have is the VR6 seal kit, not the G60 one. I need to know piston sizes before I purchase. Anybody know the truth?!