This adapter was designed specifically for the T series MG'S to adapt your original gear to work on the 123ignition.
Some fitting may be necessary. You will need to drill the adapter to accept and mount the gear as shown.
If you prefer you can send me your distributor along with the distributor clamp, and I will mount the gear for you.
Note: We do not supply gears. You will need to source one or use your original.