Need info on Dodge truck 4 door Plz

[su_jumptd]

Hello all,
I'm looking to buy a Dodge truck between 2002-2007 with the HO 5.9 engine. Mainly was looking for a four door (need lots of space in rear cab), long bed, 2500 or 3500. The Question is: besides the mega cab short bed.....are all other truck models in this year range have the standard four door configuration? I've looked at the four door long bed trucks but the space in the back don't really have that much leg room. Besides the mega cab is there any other four door truck model within this year range that has more space in the back?