When I was after a couple of sets we rang Burton, didn't have any left. Rang GGR where I got mine from before, and spoke to the same guy I dealt with last time and he only had one type of one set left, I think they were 7.5:1 and +0.5mm.... No good to either of us......

So I rang Cosworth, and they weren't sure that they ever made any pistons for a CVH

GGR said they could get some made but would be in a minimum batch of 24. We couldn't be bothered to wait, and went to Ross and get exactly what we wanted rather than skimming a piston down.