towing ability of a RAV 4

My friend has a 1998 RAV 4 with a factory tow pk, 120 hp engine, the hitch is on the bumper,,, It's rated to tow 1500lbs. I have a double jet ski trailer thats possibly around 1900lbs. Will it damage the RAV towing around 1900lbs,, what type of damage,, will it pull the bumper off. We've already towed the jet skis over 100mph with no problems,, just performance. Any info appreciated.