66 Valiant 904 install

I recall just a few "transmission brackets". A steel bracket from the bottom of the tranny to the engine (driver's side) and the "transmission cross-member" that supports the rear of the tranny via the rubber mount. Also, a little bracket that supports the tranny cooler lines off a bolt under the starter. Plus, a thin dust shield to seal the bottom of the tranny and one around the starter.

You might post photos of the brackets you have.