BMW 533i M Package

Im only 16, and about a week ago i purchased an 1984 BMW 533i with an M package... The previous owner has really looked after the car VERY WELL, and thats the main reason i decided to go with an 18 year old 5 series, supposed to an 12 year old 325iS.. The car is fully loaded, leather, 5 spd, summer, winter tires on ORIGINAL(2 different kinds) rims, with the ammentities of an M... Is there anything in particualr i should lookout for? Anyengine repairs, weak parts, care tips???? evrything is appreciated, as i am a great BMW fan!:flash: :flash: :flash: :silly2: :smoker2: :frog: :alien: :devil: