I currently have a 04 GMC 2500hd single cab long box and need more room (interior) this is also my only vehicle. Thinking about trading it in on a new pick-up with ext.cab. was wondering what I shall do sell to private party or trade in. Some truck info. 34,000 miles Truck Craft TC-120 aluminum insert Side steps Grill guard with off road lights Reverse lights and reverse beeper BF goodrich All terrian tires (2,000 miles on) 400 watt Stereo system And other extras that I know don't matter in a trade in One scratch,one dent and one small spot of rust on bumper. And what do you think this value to dealer or private party might be?