So i bought a 85 gsl and it needs new brakes all around doing rear first though. Hopeing some one can help. What is th edifference between loaded and un loaded rear calipers... what brand of parts should i be buying.. where should i look for them.. Also this is a every day driver for me an i need to know what i should be looking for as far as preventive maintnence... its got 131000 on it seems strong but could be wrong... had a 83' 95000 when i bought it run it till 140000 hardly any problems.. please help

Thanks everyone