Need help in understanding what I have. Transmission came out of a 1972 Pontiac LeMans 455. I've been told it is a 3 spd Muncie, has synchronized 1 gear, 3.09 1rst, 1.75 2nd and 1.0 final. I've been looking up info on this and haven't figured out the correct search words on the general web to use for finding tech info. I have a Hurst synchro-loc dual pattern shifter. Looking for the correct plate to mount this shifter on the transmission. Is there anyone out there who can help me with a part number? It will be going behind my fresh built 401 Nailhead in a Model A. Pics of the transmission numbers and shifter attached. Thanks.