350sdl yes or no?

[tarom]

I have the possibility of buying a 91 350sdl for 9k from a mercedes
dealership. They have all the books and records and have serviced it
from day 1. I am well aware of the problems with this engine from
my mechanic and info on mercedesshop.
Would it be insulting to have a compression test on this engine?
Would this tell me if the engine is faulty (i.e bent rods)?
I have owned a 85 300sd and 84 300d in the past


Thanks for input....