AA came out first. AACO (butterbox) continued into ACCO (still butterbox) with stainless mouldings around the sides from the front. Not quite sure when it went to single headlights. Would have to look it up.
Then in 1972 (?) new cab (still current!!!)
Nowhere is there warmth to be found
Among those afraid of losing their ground
Swishenhiemer. You have not read the gospel by Atkipete. It is the word. The whole word.......
Oilman & ASW are right, the ACCO is built on an Inter A series based chassis etc. The next chassis upgrade was the C series hence the name change. You ought er buy one with a little GM squeezed into it.
Nice upgrade there Swishy. I'd say she'd be somewhere around 1966.
I'm afraid i can't give you a definite yes or no answer re the PTO, however my parts books tell me the 6 stud PTO mounting on the 4 speed ASC gbox, and the 5 speed AACO gbox, are the same. I don't know about internal reach/mesh though sorry. I have one of each here, but have never had them off of tried to swap them. The PTO on my AS160 is the old shaft type running back to drive a gear pump, and the PTO on my ACCO is a direct mounted pump.
Google tells me that the 5 speed has a 21 tooth PTO drive gear on the RHS, and a 19 tooth PTO drive gear on the LHS, but i don't have the experience to confirm if this is accurate.
If you get stuck for a PTO, Prices Wrecking in Dalby have a container with maybe 200 PTO's from trucks of that era both mechanical and integrated hydraulic pump. The vast majority ran bag-lifters or tippers in the Darling Downs wheat country.