Hope you can fined a 160, but in reality, the 147, 159,160 & 161 are all great boards. If you are really lucky, you might find a 147 in good shape. At 75kg, the smaller 147 might fit your needs better than the other newer boards. I had a 147 and replaced it with the 160. If you are not a serious racer and just like to go blasting for fun, the 147 may be your best choice.
Good luck on your search.