Ive done 1000's of 4.0L oil pan jobs, not something for a senior backyard weekend ambitious warrior.
too much involved & very difficult to do on your back or even on ramps...
Not certain if the 97 has a full suspension crossmember going across the oil pan area. My guess is it does....
If it does, youre suppose to pull the engine..
or pull the trans, transfer case, disconnect the driver side engine mount, pull the fan & shroud, crank the driver side of the engine to the moon to get the oil pan windage tray to clear the oil pump pickup tube...
We use multiple pole jacks to lift the back of the engine high enough, finding a way to lift the engine while on the ground & doing it safely would be very challenging...
HUGE job....
Nobody can pay me enough to be willing to do it on my back....