rfo1956

My 2000 forester with a 2.5 engine and std.transmission has a rod knock and blown head gaskets 273,000 miles ,I just purchased a 2000 forester with a good running 2.5 engine ,the car was hit in the back and totaled,this car has a automatic transmission ,I've pulled the engine and plan on doing head gaskets and timing belt ,installing the fly wheel ,my question is,what needs to be done to the engine because it came from a automatic and going into the standard?