Heres some pics of My 96 crew cab dually taking my 1972 C50 stake truck to the scrap yard with a GVCW of 26,500 lbs I towed it 60 miles. The stake truck weighted 10,500 and the trailer is about 7,000.
With my new Westers reflash ECM she towed it great on a 91 deg day with the air on, EGT's didnt get hotter than 800, trans temp was 200, and coolant got to 220 once going up a big hill.
Not to bad for a 11 year old 6.5