The numbers on my tranny are like this: on the drivers side, E246 on the top line, then 8 on the second line, GM on the third line, and 3837334 on the fourth line. In raised characters on the back end of the trans are these: 681701 first line, GM on the second line, and 10 on the third line. I can guess the GM part......but does anyone have a translation for the others? It is a four speed with reverse to the down and to the left, PTO take off cover on the drivers side, and no major ribbing I can see on either side.