They will most likely let you bring compressed air in. buy about$100 or rent a leak down tester it will save you a lot of grief. Yards are required by law to drain AC refrigerant most also have to drain fuel coolant oil and battery strangely enough cigarette lighters and catalytic converters too. If you don’t know about leak down testers do a search. Pick n pull chargers about $ 6o dollars more for complete motor than bare block and head. We pick motor then switch out accessories with best looking ones in yard. There engine hoist are great and with car lifted the way they are its real easy to lift motor out. Check tranny fluid that’s left in pan see if its real burnt then you will know if tranny went out and that is a good reason for the car being there with only 180k on the motor.
good luck