[Jim/GA]

While I agree with other comments to use what you have, to answer your original question: yes, you can do it with the engine in the car.

I find it frustrating to ask a question and get lots of replies except for an answer to the original question. I don't know if 1 nut is better than 2 on the lifters. I have heard you need 3 hands to adjust the 3 nut style. Kind of a tight space for 3 hands.