So I am picking up a new to me 2000 4Runner sport. It is in good shape other than the engine leaks out of the main seal, by leaking I mean don’t drive it more than a mile or 2. It is a 3.4 auto. Do I... pull tranny and redo the rear main? Or pull the engine and do a full reseal? Or do a full rebuild? Or full on engine swap? The plan is waggy front swap, lockers front and rear and full body armor on 35s or 37s. Reliable streetableish trail rig. Exact miles are in the mid 150s