Ducati S4r rear Shock questions...

[Metzis]

I'd like to know if anyone knows for sure if a rear shock from a different model suit to the s4r without any modifications because i am into purchase a second handed ohlins shock but there are not a lot available from the s4r/s4rs series so i am wondering if a shock from a 749/999 or 916/996 whould fit... Many thanks... If not i am probably going to upgrade the spring and the internals of my shock.

[MonsterHPD]

Without knowing specifically which Öhlins shocks go where,  I think I remember the shocks for the Hypers have a longer stroke than the Monster shocks. I also think the reservoirs will not fit on the Monster frame.  

Edit: I just remembered there is a thread about more or less the same question:

http://www.ducatimonsterforum.org/index.php?topic=59971.msg1106721#msg1106721