1969 Dart GTS340 on the way

Just a thought,but if the heater hoses are disconnected that,s a good sign the heatercore is going to be junk.Old anti-freeze turns acidik and can also rot frost plugs from inside out.Has this car been sitting long?Check for leaks,also check rad for any stop leak product,plugs up cooling system pretty good.Good Luck!pics and price?If you don,t mind diclosing.