When the transmission make/type/speed is eaton fs 5306-a manual synchromesh 6 speed, what is the value of the gcm (kg) technical capacity?
create table table_11497980_1 (gcm__kg__technical_capacity varchar, transmission_make_type_speed varchar, PRIMARY KEY (gcm__kg__technical_capacity))
select gcm__kg__technical_capacity from table_11497980_1 where transmission_make_type_speed = "eaton fs 5306-a manual synchromesh 6 speed"