...Your house and your neighborhood within 12 blocks disappears from the face of the earth. The soot from the explosion will cause an ice age in the Northern Hemisphere and within two years the Sun will cool and become a planet. And, you'll probably piss a lot of people off.
Hope that helps. Let me know if you do this.
Actually, polarized or non-polarized is not an issue. The big deal is if you apply 160v to a 100v cap, it will blow and most likely take out some other circuitry as well. If you need to apply around 160v to a cap, go with a higher common voltage value which I believe is like 230v or 250v. It's always good to give yourself some voltage headroom and many times, that higher voltage rating will sound a bit better too.