Just for reference...the Fiat X1/9 "early" kits will work to rebuild an original Goose cylinder if you have yours re-sleeved with brass etc.
The early kits were just a wiper seal...and maybe an o-ring that doesn't get used.... The later kits come with more parts!
(.750" bore...Girling parts...English measurements!?
S/B same as master cyl bore.)There are at least two different X1/9 setups with different pistons too! I picked up a few old Fiat slaves from X1/9's and recently fitted one of the slightly more modern pistons into my older slave body. I had kits for that style so, figured what the heck, try it and see! Seems to be working just fine! I do still have some original style seals with new pistons that I picked up from some guy down in Brazil many years back....if anyone needs one.
My notes say seal# 51940-00999NRC I believe this is the number from the original Girling style umbrella seal.
You guys down under may still be able to find the late style X1/9 kits under Beck-Arnley #071-5789 Also under Wagner F103530. Lemmeno if you find them!
Steve