I have used my 04 H2 with a magnacharger super charger to tow my 28' Nordic Heat, no problems at all. This year I tried towing my new 35' Nordic Flame, and after a 4 hour tow, I fried the second gear of the transmision. I would not advise towing with the stock set up, I found there was a constant up and down shifting before the supercharger. After the supercharger I would say you are Ok towing up to about 9K, but you will be over your max tow limit, and open to liability if in a accident. I just ordered a ford f-650, so I don't have to deal with it anymore.