Upgrades !!!!
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The 5.9 TB and the 5.2 TB are both duel 48mm openings unless you send one out to have it opened up. The kegger mod is going to lose you torque down low but is going to give you more horse power up top in the higher RPM range. There was a guy that did before and after dyno runs and that's what he got. I have a 52mm throttle body and the kegger mod done and love it. I tow cars occasionally with my Dakota and didn't notice the torque loss in pulling.
A.J.
A.J.