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first of you got a good deal, there is so many aftermarket parts avail. for that year and body style.with the od off you will notice longer intervals before gear change also around town you should turn it off. but it does wonders on the highway. i have an 05 4.7 dak that gets about 18/19 around town and 20/22 mpg on the highway. plus you have the tonneau that will help.

 

gorgeous truck there, but id hate to say there isnt much aftermarket performance for the 3.7 and no chip modification for it at all from what i know, but welcome and enjoy your dak

 

welcome to the forum. nice dak

 

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