Need a hand Decoding this 4 speed

You have an A body mainshaft and tail housing. People broke ears off of the main case? Swap whatever is available. I would not hesitate to do the same. Lunched the 67 B Body trans? Wanted the larger 308 front bearing main case? Who knows. The Brewers site has a good overveiw, click on the "Before you Order" tab. Should be easy to figure out what gears are in there.