i change my rear shock to the new one i got from ebay.
it should have been straight forward...but as usual it was not!
the exhaust pipe going from my Y-piece to my Laser's was preventing the bottom bolt to come out. which meant i had to loosen the entire exhaust from front to rear and shuffle it out of the way.
here are some pics.

new shock installed

old shock

anyway, havent road tested it yet, but might do that tomorrow morning..
thx Lars