Standard ST170 is finnis 1071744 Which is victor reinz part no. 61-34340-00
2.0 Blacktop And FOCUS RS MK1 are 0.6mm i believe part no. 61-34440-00

1.8mm for skimmed heads but they are hard to get, better of going for a cometic or similar to get thicker, burton power have around 1.8mm for turbo usage.
Hope this helps