You will have to check the compliance plate. 2001 Ghallengers had many different models, diesel, petrol, manual and automatic, one reason why they never were popular. Don't get me wrong, I own a 2013 model and can't fault it, but you need to find out what model you have and track it down from there. Sorry I can't help.
Thanks Rod i do believe they are much under rated but have never towed with it anything bigger then a tandem trailer being manual and petrol do you think it would still do the same job as is only a 3tr