Replacing a 273 motor for a 5.9 360 Motor Question

Need more info...year of 360?car/truck engine?You,ll need new mounts,check water pump outlet side(drivers or pass.side?)Your bellhousing should bolt up without issues.You will have to change convertor to external balanced also or just a B&M flexplate.I,m not too familiar with the 273 manifolds.Good luck.