Best wishes on long enough and shape lever arm to reach nuts shielded by the cheeks. Suggest monitor torque till ~.006-.0065" stretch on exposed nuts,(depending on temperature assembled), then try to match the wrench effort-grunt on the tough to reach ones. Might have to fudge/judge calibration effort sense if using different wrench combo on different studs. Following prime/proper torque procedure, one can feel confident on two of the fasteners. Thank goodness studs only have shear force to resist, nil separation/stretch like rod caps so really only need nuts to not back off/fall off. Applied hi temp permanent stud Loctite will not be present/effective after next opening, nuts too easy to turn, so if too timid to nip up like factory, consider staking or lock tabs.