omg, i currently have 183K on my 03 4.4i. i bought mine a couple of years ago on auction. my question is this for you guys with high mileage, what major motor and transmission work do i need to do to keep it up to the 300K mile mark?

i'm aware of the chain guides, i'm planning on getting it done, as i don't know if the prior owner has had it done. also my transmission jerks when i drive up a hill. so i'm considering getting the transmission looked. i will love to keep this car for the next 5 years.