IS the 4 hour version available, commercially or otherwise? Is it worth watching at two and a half?

I've read that at some point in production, DePalma showed a three-hour cut to Ellroy, who approved of that, at least compared to the released film. Does anyone know if this cut has ever surfaced?

The best collection of resources I've seen on this film we'll never seeL http://www.subcin.com/clowncried.html