maybe this is a dumb question but I need something answered

Im a new cb400 super four project 1 owner nc31 frame nc23 engine 92 made 97 jap import.
so far so good.
what battery should it have !!!!! bare with me here......
the so called English manual thats shared around is for a CB1.... and i cant see the answer there anyway.
on the YUASA site it states
CB400F , CB1 89-90 (YEAR ?) = YTX9BS 12 VOLT/8 AH/90 CCA/ L 152 mm X W 88mm X H 106mm
CB400 SUPER FOUR 75-77 = YB12AA 12 VOLT/12AH/135 CCA/ L 134mm X W 81mm X H 160 mm