Greddy Filter Block problem !!

Hello,
The Supra (JZA80 TT 1994) that I bought came with the Greddy Filter Block Adapter Unit and a Mechanical Oil Temperature Guage. Unfortunately the guage has failed and I bought a Greddy Electronic (60mm Peak Hold etc) Temp unit to replace it. Unfortunately I didn’t realise the Mech Guage/Block Adapter fitting were a different size to the electronic temp guage probe. So I cannot just take out the old probe and screw in the new. The new is a lot thinner than the older probe (The old probe screws into a fitting which is screwed into the filter block adapter)
Can anyone please tell me the sizes of the different ports on the Block Adapter and which fitting I need to use to fit the new probe. (The electronic guage probe didn’t come with any fittings other than the screw in probe itself.
Thank you for your help
Andrei