After lot of considerations I decide to go and purchase 07 SB with SRW but with 5. 9 l engine. Local dealer have a same price for 2500 and 3500. I will put 5th wheel hitch on it. Trailer weight 12000 #. I thought maybe 3500 will be better, because of the payload, but don't like to have to bumpy truck when not towing. I was driving both and seem to be same ride, but road was pretty smooth. What exactly is a difference between them ? Only thing I find different is a aux. spring on rear of the 3500 and badges. Are front and rear springs stiffer too ? Any idea ?
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