Join Date: Mar 2007
Location: Marquette, WI
Thanked 44 Times in 38 Posts
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If I was you (which I know I'm not), I'd stick with the 4bt swap. There are a couple websites with much info on these from transmissions that work, to how someone made the stock vehicle accesories work with the swap.
Now, keep in mind that your durango is less than a half ton and therefore the torque of a diesel is going to be really hard on the driveline without some upgrades. Also, the front will need some better suspension even with the 4bt I believe due to the motor being heavier.
Your stock transmission won't hold up. I'd check and see what others are using. If you don't have super deep pockets for the fab work on the chassis, I'd just do the 4bt. Still a great motor and makes great power and possibly better mpg. I just don't like the whole cutting up the firewall thing. Plus, if they have to do that, you can kiss the a/c goodbye more than likely.
2005 Black 3500 QCLB 4x4 Firepunk A/T - Aka: Gettin' Outta Hand email@example.com *Currently in Pieces*