Board Thread:Theories and Speculation/@comment-26388300-20150528203740/@comment-681696-20150528204836

Rock Lee is capable of using ninjutsu so if he was a jinchuriki he would still be capable of using ninjutsu, but he would still have no talent for ninjutsu.

The Tailed beast that I think would benifit Rock Lee the most would be Kokuō as Kokuō could use Boil Release: Unrivalled Strength on Rock Lee to enhance his Taijutsu.