On 2004-08-27, bob haller wrote:
Obviously one is man rated. Is the basic block the same?

Answer using no long words: yes

http://www.astronautix.com/lvs/soyuzfg.htm

"Uprated Soyuz booster designed for high performance Russian government
missions - delivery of Soyuz and Progress spacecraft to the
International Space Station."

They appear to use functionally identical launchers, although it's
possible the manned flights are flown with extra telemetry.

--
-Andrew Gray