Just measure what you need. Make sure that the ones that go into the case do not extend past the housing as they will hit the gears, especially the upper one. Use thread sealant. Pretty sure they are all M10, not M8.
Stock bolt sizes are usually in the manual. If not, the size can be decoded from the part number.
Pissing people off on the "net" since 1983.
Land Rover. Turning owners into mechanics since 1948.