Marzocchi rear shocks any good?
 

Anyone have any advice on whether it would be worth fitting a set of rear Marzocchi shocks to my soon-to-arrive BMW R60/6?
The seller of the bike has offered me a set and I'm keen to take them. But they're not cheap.
I'll be travelling two-up, with minimal gear, on Mozambique Autobahn, ie broken asphalt, potholes of varying circumference, depth and danger, and quite a lot of hard dirt.
thanks
PK