Umm Yeah
it is a OD tranny
the A body is the short shaft version & basically will not bolt into a Chall ,, the short shaft version is harder to find & usually is worth more though so you may be able to trade , or the main shaft & tailhousing can be swapped , but it shoul dbe easier to find a tranny than just the needed parts
Passon Performance Or Brewers can help with the needed parts