Thinking about a 360 magnum?Some ????

Gonna talk to a guy I know tomorrow about a low mileage 360 Magnum(I believe its a 91?)So to swap it in place of a LA 360,what all do I need to change?It,s a complete motor with alternator and pully,s,fuel injection,starter.I would be swapping to carb and I have a 2500 stall with weights on it.Will I need the B&M flywheel with weights?Headers fit?Oil pan&pickup?Thanks for any help and will post what year and vehicle it,s out of tomorrow.