New truck time

Just finished with a 91 GMC 1/2 ton. Want an '03 - '05 Dodge with Cummins. Tow a 30' Travel trailer in summer, snowmobiles in winter.
Was wondering if this group could help me with what to look for or lookout for. New would be nice but not very likely. Perhaps '03 and something like an Edge kit (if possible) Any and all advise would be greatly appreciated.
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