SNYDERS CARRYS THE GEARS:
https://www.snydersantiqueauto.com/P...tributor-timer
However the Texas T drive set is great if you can find them,they were shipped with a linkage rod based on the VW distributor being the incorrect rotation for the gear set, making it ok but just NOT right.(they welded up the mechanical advance) Both rotation gears were made by Bosch and i have bought some over the years.
We have used a 4 cylinder Mallory and cut it to fit the Texas T drive......
Cant beat a mechanical advance for a T properly set up. Just hit the starter and take off . A T like 20 degrees at 2000 rpm or so and a modified engine might even like a little more , my last one ran 30 degrees .......