In the philip carlo ' s book is said that Kuklinsky after was arrested for the first of the 5 murders decided to admit the rest of the murders for dont make suffer his family with the mass media attention. For sure Kuklinski could speak on gravano for the the calabro death and for the other people whacked for the mob especially after gravano flips; for sure he won't be free again but would stay in a low security prison der false name.
You're right about that Furio. Kuklinski was scheduled to testify against Gravano, so that had to be in exchange for something.
Some says that Kuklinski was poisoned for this but I dont think so. At the end who know ?
