Does this 3 speed have syncro 1st gear?

The 903 and 745 are different trannys. They are both top-loaders with no side-covers and no synchros on first. IIRC (it was 35 years ago), the 903 is a lighter duty than the 745. The 745 was a tank. I think it weighed about 700 pounds.I also seem to recollect that these two were all cast iron with tin top covers.

The A230 has a side-cover and of the many hundreds of those that I rebuilt, I don't recall ever seeing one that wasn't fully synchronized. I seem to remember this tranny had a cast iron main box and aluminum rear housings.