The information you seek is listed here: http://www1.synapse.ne.jp/s-hara/bandit/ban-spece.html The numbers you quote are correct for the early model Bandit / GJ73a engine. Easy to identify by the dimples in the clutch cover and downdraft intake ports.
Hi there, I know this was years ago for you but do you by any chance still have or remember where you found the GJ73A manual.? Many thanks