That bracket is for the B body cars ONLY. It will NOT work on an A body. It's for the B body bench seat cars, and uses the forward pad on a B/E body dual shifter pad transmission. The bucket seat B/E bodies used the rear shifter location. On an A body 833 that bracket would stick up through the floor!
The 71b body pistol grip works with both bench seat and bucket seat a body cars. You can use an E body console pistol grip in a bucket seat A body if the 71b non console grip is too high for you, but I found the E body pistol grip too short for my tastes even with buckets.