Il pan rusting and leaking

Replace the filter.

could be front or rear seals on tranny? or tranny pan gasket hope i was helpfull

The oil pump is in the pan you may be leeking oil from the oil sending unit next to the oil filter or the filter may be leeking . get under vehicle after safely securing it wipe off and figure out where it is leaking from if oil pan is rusted through replace oil pan. usually its the oil sending unit switch usually under 20 dollars for part and it screws on and off

Yes, it will, as long as it is the same motor........

IF IT IS HOT AT IDLE IT IS LEAKING, JUST THE ENGINE AND LET IT IDLE, WET YOUR FINGERS AND TOUCH THE CAST IRON PART OF THE VALVE NEAR THE BASE.

CHECK THE REAR SENSORS AND WIRE.
THEY MAY HAVE BEAN PULLED APART OR RUST IS FOULING THE SENSOR PICKUP.

Replace you Maf sensor and have a nice day. lol does the hesitation go away when you let off the gas. does it buck hesitate and misfire under load? most common problem is the maf sesnor.
easy to change. don't buy a used part it may develop the same problem after a little while. you can try cleaning the wire inside with brake cleaner (not intake cleaner). it may or may not help.

no recall that i know of,those pans like to rust by the drain plug and on the sides

Check the starter solenoid. Usually mounted on a fender well. Find by following the + battery cable.

did you check the inertia switch?? that's what happened to mine