I know that the door panels are very expensive. They are probably $400 - $500 USD each! I'm not sure about the dash parts.
Go to: dodge.com
click on: for owners - a tab at the top of the page
on the new page, find Mopar on the right side. click on: find it, buy it, own it
you will see a list of all the Dodge products. Click on Nitro parts. Put in your year, and you will come to a list. each heading breaks down into categories. You should come to a picture with numbers. Scroll down to the part you want, and if the part is available, you will get a price.
I think it would be much easier for you to get the parts you need off of a salvage or wreck.
Good luck.
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2011 Nitro Heat 4x4:
Bright Silver Metallic,
Dark Slate Gray; Customer Preferred Package 24C; Trailer Tow Group; Hood-to-Fender Stripes; Navus 2; Uconnect.
MODS: S/S Nerf Bars;
Mopar Chrome Rear License Plate Brow, Chrome Exterior Package, Production Style Cross Bars, Deluxe Molded Splash Guards, Cargo Security Cover, Door Sills & 3.7L Emblem; Media Center 230; Kicker Speakers; Carbon Fiber Dash Kit.
FUTURE MODS:
Mopar CAI, Pedal Kit; Heated Katzkin Leather.