Are you sure that you have to replace the lifters? That is a pretty uncommon failure and generally isn't considered a "tune up" item.
Also, why do you want to replace the motor? 165k on these is nothing.
Edit: I think I (and others on the board) already took time to answer your lifter problems earlier. Unless something changed that was pretty serious, why are you posting again without trying the solutions given?
Am not sure about the lifters. I have used lucas oil and gtx 10w30. it still was ticking.
i wasnt trying seem like i am wasnt going to try anything you guys told me and wasnt reposting the same question.
I should have requestion my question.
As far as replacing the motor i thought it would be best.