If you listen to what Milos Sarcev has to say about macronutrient consumption, you would have to believe that not only is 1g protein/1lb of bodyweight ideal for sustaining normal function, BUT for a bodybuilder (depending on your bodytype and activity level) 1.5-2g protein/1lb bodyweight should be consumed. The reason I tend to agree with 1g/1lb of bw vs. 1g/1lb lean mass is because your body requires amino acids from protein to repair lean muscle tissue and maintain other body systems such as the skin, hair, nails, and organs. 1 lb of lean tissue takes 67 kcal daily to maintain, it takes an excess of that amount to build muscle tissue. If only 1g/1lb lean mass is taken in daily, I believe you run the risk of your body still cannabolizing its own muscle tissue for the amino acids necessary to build/rebuild lean tissue and sustain the other previously mentioned body systems. Trial and error is often the best method for deciding for yourself what your protein requirements are. Start with 1g/1lb of bw and re-access after a few weeks. If your honest with yourself and listen to your body, you won't go wrong.
BEAST