No, it wont be good. While it is possible to physically hook it up, the M105 trailer has air brakes, and is WAY TOO HEAVY for the CUCV... The trailer will push the CUCV arround.. It's rather unsafe...
What you want AT THE MOST is a M101 series trailer (3/4 ton)... The -10 says a M416 type (1/4 ton) trailer is the only authorized trailer for the M1009.
To sum it up, the 1/4 ton good, the 3/4 ton ehhh maybe, the 1.5 ton hell no.